Merge pull request #338 from MacRimi/fix/pr337-docker-update-hardening

Fix Docker app version tracking, cache consistency and delegated updates

AppImage/components/lxc-app-panel.tsx

@@ -233,9 +233,8 @@ interface Suggestions {
   docker_web_links?: DockerWebLinkSuggestion[]
 }
 
-// An application proven to run inside Docker. Shown beneath the Docker
-// detection, never as a registrable app: its update path is the Docker
-// image it comes from, and offering a second one would contradict it.
+// A registrable application inside Docker. Its image remains the updater;
+// registration adds identity and version tracking, not a second update path.
 interface DockerWorkload {
   slug: string
   name: string
@@ -636,10 +635,11 @@ export function LxcAppPanel({ vmid, ctIp, onChange, managed, initialData }: Prop
   )
   // Detections the user hid and could restore from the Register-a-
   // different-app panel. Not affected by registration state.
-  const hiddenDetections = detectedList.filter((d) => dismissedSlugs.has(d.slug))
+  const hiddenDetections = [...detectedList, ...(suggestions?.docker_workloads || [])]
+    .filter((d, index, items) => dismissedSlugs.has(d.slug) && items.findIndex(item => item.slug === d.slug) === index)
 
   const searchInstalledApplications = async () => {
-    const before = new Set(visibleDetected.map((item) => item.slug))
+    const before = new Set([...visibleDetected, ...visibleWorkloads].map((item) => item.slug))
     setSearchingApplications(true)
     setDetectionNotice(null)
     setError(null)
@@ -653,6 +653,7 @@ export function LxcAppPanel({ vmid, ctIp, onChange, managed, initialData }: Prop
       const detected = new Set<string>()
       if (result.helper_slug) detected.add(result.helper_slug)
       for (const item of result.extras || []) detected.add(item.slug)
+      for (const item of result.docker_workloads || []) detected.add(item.slug)
       const visible = [...detected].filter(
         (slug) => !registeredSlugs.has(slug) && !dismissedSlugs.has(slug),
       )
@@ -664,16 +665,6 @@ export function LxcAppPanel({ vmid, ctIp, onChange, managed, initialData }: Prop
           found: true,
           text: t("vmLxc.appEditor.newApplicationsDetected", { count: newCount }),
         })
-      } else if ((result.docker_workloads || []).length > 0) {
-        // Saying "nothing found" while the panel is listing containerised
-        // applications it just read versions from is the one answer that is
-        // certainly wrong.
-        setDetectionNotice({
-          found: true,
-          text: t("vmLxc.appEditor.dockerDetectedWithWorkloads", {
-            count: (result.docker_workloads || []).length,
-          }),
-        })
       } else {
         setDetectionNotice({
           found: false,
@@ -2361,7 +2352,7 @@ export function LxcAppPanel({ vmid, ctIp, onChange, managed, initialData }: Prop
             size="sm"
             variant="ghost"
             onClick={() => dismissDetection(w.slug, w.name)}
-            aria-label={`Hide ${w.name} detection`}
+            aria-label={`${t("vmLxc.appEditor.hideButton")}: ${w.name}`}
             title={t("vmLxc.appEditor.hidePermanentlyTooltip")}
             className="flex-1 sm:flex-none bg-red-500/10 hover:bg-red-500/20 border border-red-500/30 text-red-400 hover:text-red-300"
           >

AppImage/components/virtual-machines.tsx

@@ -100,6 +100,8 @@ interface LxcAppWatch {
   // once, through the image.
   docker_available_version?: string | null
   docker_update_available?: boolean | null
+  docker_image_reference?: string | null
+  docker_binding_error?: string | null
   ports?: LxcAppPort[]
   logo_url?: string | null
   health_path?: string | null
@@ -263,7 +265,7 @@ function hasLxcPendingUpdates(vm: VMData): boolean {
   if (vm.type !== "lxc") return false
   const osUpdates = vm.update_check?.count ?? 0
   const appUpdates = (vm.app_watches || []).filter(
-    (app) => app.update_available === true && !app.exclude_from_badge,
+    (app) => app.update_via !== "docker" && app.update_available === true && !app.exclude_from_badge,
   ).length
   const dockerRegistered = (vm.app_watches || []).some((app) => app.helper_slug === "docker")
   const dockerUpdates = dockerRegistered ? (vm.docker_inventory?.update_count ?? 0) : 0
@@ -273,9 +275,9 @@ function hasLxcPendingUpdates(vm: VMData): boolean {
   // supported choice, and it must not leave the CT looking up to date.
   // Counted only when the image is not already counted, so one release
   // stays one number.
-  const delegatedUpdates = dockerRegistered ? 0 : (vm.app_watches || []).filter(
+  const delegatedUpdates = dockerRegistered ? 0 : new Set((vm.app_watches || []).filter(
     (app) => app.update_via === "docker" && app.docker_update_available === true && !app.exclude_from_badge,
-  ).length
+  ).map(app => app.docker_image_reference || app.id)).size
   return osUpdates + appUpdates + dockerUpdates + delegatedUpdates > 0
 }
 
@@ -2572,15 +2574,15 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
   const getAggregateUpdateCheck = (vm: VMData): LxcUpdateCheck | undefined => {
     const uc = vm.update_check
     const appCount = (vm.app_watches || []).filter(
-      (a) => a.update_available === true && !a.exclude_from_badge,
+      (a) => a.update_via !== "docker" && a.update_available === true && !a.exclude_from_badge,
     ).length
     const dockerRegistered = (vm.app_watches || []).some((a) => a.helper_slug === "docker")
     const dockerCount = dockerRegistered ? (vm.docker_inventory?.update_count ?? 0) : 0
     // See hasLxcPendingUpdates: a delegated app counts only while its image
     // is not already being counted through the Docker section.
-    const delegatedCount = dockerRegistered ? 0 : (vm.app_watches || []).filter(
+    const delegatedCount = dockerRegistered ? 0 : new Set((vm.app_watches || []).filter(
       (a) => a.update_via === "docker" && a.docker_update_available === true && !a.exclude_from_badge,
-    ).length
+    ).map(app => app.docker_image_reference || app.id)).size
     const osCount = uc?.count ?? 0
     const total = osCount + appCount + dockerCount + delegatedCount
     if (!uc && appCount === 0 && dockerCount === 0 && delegatedCount === 0) return undefined
@@ -2590,10 +2592,17 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
     // showed a number that explained nothing. Applications and images join
     // that list under the same names they carry everywhere else.
     const pendingNames: LxcPackageUpdate[] = []
+    const namedImages = new Set<string>()
     for (const a of vm.app_watches || []) {
       if (a.exclude_from_badge) continue
       const isDelegatedPending = a.update_via === "docker" && a.docker_update_available === true && !dockerRegistered
+      if (a.update_via === "docker" && !isDelegatedPending) continue
       if (a.update_available !== true && !isDelegatedPending) continue
+      if (isDelegatedPending) {
+        const reference = a.docker_image_reference || a.id
+        if (namedImages.has(reference)) continue
+        namedImages.add(reference)
+      }
       pendingNames.push({
         name: a.name || "",
         current: a.installed_version || "",
@@ -5171,6 +5180,7 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                         const hasOsUpdates = osUpdateStatusKnown && !!uc.available
                         const dockerAppWatch = (selectedVM.app_watches || []).find((a) => a.helper_slug === "docker")
                         const dockerRegistered = !!dockerAppWatch
+                        const dockerWorkloadsRegistered = dockerRegistered || (selectedVM.app_watches || []).some(a => a.update_via === "docker")
                         const dockerEngineInstalledVersion = selectedVM.docker_inventory?.engine_version
                           || dockerAppWatch?.installed_version
                           || ""
@@ -5187,7 +5197,11 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                           || canonicalDockerEngineUpdateCommand
                         const dockerInventoryRefreshing = selectedVM.docker_inventory?.refreshing === true
                         const dockerInventoryAvailable = selectedVM.docker_inventory?.available === true
-                        const dockerImages = dockerRegistered ? (selectedVM.docker_inventory?.images || []) : []
+                        const delegatedContainers = new Set((selectedVM.app_watches || [])
+                          .filter(a => a.update_via === "docker").map(a => a.container_name))
+                        const dockerImages = (selectedVM.docker_inventory?.images || []).filter(image =>
+                          dockerRegistered || (image.used_by || []).some(name => delegatedContainers.has(name)))
+                        const followedImageReferences = new Set(dockerImages.map(image => image.reference))
                         const dockerPending = dockerImages.filter((image) => image.update_available === true)
                         const helperExists = !!uc?.app_updater_present && uc?.helper_slug_source === "update_wrapper"
                         const helperName = uc?.helper_app_name || null
@@ -5250,7 +5264,9 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                           : scheduleTargets.some((target) => versionTrackedScheduleAppIds.has(target))
                         const composeProjects = new Map<string, LxcDockerComposeTarget>()
                         for (const target of selectedVM.docker_inventory?.compose_projects || []) {
-                          composeProjects.set(`docker-compose:${target.project}`, target)
+                          if (dockerRegistered || dockerImages.some(image => (image.update_targets || []).some(item => item.project === target.project))) {
+                            composeProjects.set(`docker-compose:${target.project}`, target)
+                          }
                         }
                         const standaloneContainers = new Set<string>()
                         for (const image of dockerImages) {
@@ -5315,8 +5331,9 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                             logoUrl: webLinkLogo || app.logo_url?.trim() || "",
                           }
                         })
-                        const dockerUpdateUnits = dockerRegistered
-                          ? (selectedVM.docker_inventory?.update_units || [])
+                        const dockerUpdateUnits = dockerWorkloadsRegistered
+                          ? (selectedVM.docker_inventory?.update_units || []).filter(unit =>
+                              dockerRegistered || (unit.references || []).some(ref => followedImageReferences.has(ref)))
                           : []
                         const bulkActionChoices = [
                           ...bulkAppChoices,
@@ -5513,8 +5530,9 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                                     standalone containers. Keep all three in
                                     one registered-app section while exposing
                                     a concrete action for each target. */}
-                                {dockerRegistered && dockerAppWatch && (
+                                {dockerWorkloadsRegistered && (
                                   <div className={dockerEditing ? "py-4 -mx-4 px-4 bg-accent [&_textarea]:bg-background" : "py-4"}>
+                                    {dockerAppWatch && (<>
                                     <div className="flex items-center justify-between gap-3 mb-3 min-w-0">
                                       <div className="flex items-center gap-2 min-w-0">
                                         <Container className="h-4 w-4 text-muted-foreground flex-shrink-0" />
@@ -5649,8 +5667,9 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                                         </div>
                                       </div>
                                     )}
+                                    </>)}
                                     {selectedVM.docker_inventory && (<>
-                                    <div className="border-t border-border/50 pt-4 mb-1 flex items-center justify-between gap-3">
+                                    <div id={`docker-images-${selectedVM.vmid}`} className="border-t border-border/50 pt-4 mb-1 flex items-center justify-between gap-3">
                                       <div className="text-[10px] uppercase tracking-wider text-muted-foreground">
                                         {t("vmLxc.updates.dockerImagesSubheading")}
                                       </div>
@@ -5985,7 +6004,7 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                                             {aw.name}
                                           </h3>
                                         </div>
-                                        {!editing && (
+                                        {!editing && aw.update_via !== "docker" && (
                                           <button
                                             type="button"
                                             onClick={() => openCustomCmdEditor(aw)}
@@ -6074,7 +6093,12 @@ const handleDownloadLogs = async (vmid: number, vmName: string) => {
                                           ) : tracksVersion ? (
                                             <div className="text-sm text-muted-foreground">
                                               {aw.update_via === "docker"
-                                                ? t("vmLxc.updates.updatedWithDockerImage")
+                                                ? <>{aw.docker_binding_error
+                                                  ? t("vmLxc.updates.dockerBindingUnavailable")
+                                                  : t("vmLxc.updates.updatedWithDockerImage")}{" "}
+                                                  <a className="text-blue-400 hover:underline" href={`#docker-images-${selectedVM.vmid}`}>
+                                                    {t("vmLxc.updates.dockerImagesSubheading")}
+                                                  </a></>
                                                 : t("vmLxc.updates.versionTrackingPendingShort")}
                                             </div>
                                           ) : hasCmd ? (

AppImage/lib/lxc-apps-cache.ts

@@ -39,6 +39,17 @@ function withObservedStates(vmid: number, sidecar: any): any {
   const apps = sidecar.apps.map((app: any) => {
     const observed = observations.get(app.id)
     if (!observed || observed.managed_oci_app_id) return app
+    if (observed.state_revision && sidecar._revision && observed.state_revision < sidecar._revision) return app
+    // Docker metadata can finish after the app's version probe. It arrives
+    // on the same VM feed but must not wait for a new sidecar revision.
+    if (app.update_via === "docker" && observed.update_via === "docker" && app.container_name === observed.container_name) {
+      for (const field of ["docker_available_version", "docker_update_available", "docker_image_reference", "docker_binding_error"]) {
+        if (field in observed && observed[field] !== app[field]) {
+          app = { ...app, [field]: observed[field] }
+          changed = true
+        }
+      }
+    }
     if (observed.state_revision && sidecar._revision) {
       if (observed.state_revision < sidecar._revision) return app
     } else if (!observed.checked_at || (app.state?.checked_at && observed.checked_at < app.state.checked_at)) {

AppImage/messages/de/common.json

@@ -1239,6 +1239,8 @@
       "custom": "Benutzerdefinierte Cron…"
     },
     "updates": {
+      "updatedWithDockerImage": "Wird zusammen mit dem Docker-Image aktualisiert.",
+      "dockerBindingUnavailable": "Noch kein Image zugeordnet. Prüfen Sie den Containernamen und aktualisieren Sie das Image-Inventar.",
       "osPackagesTitle": "Betriebssystempakete",
       "lastCheckedPrefix": "Zuletzt überprüft:",
       "familyLabel": "Familie:",
@@ -1400,6 +1402,11 @@
       "loadFailed": "Die Massenaktualisierungskonfiguration konnte nicht geladen werden."
     },
     "appEditor": {
+      "dockerDetectedWithWorkloads": "Docker mit {count} Anwendungen in Containern erkannt",
+      "dockerWorkloadsHeading": "Anwendungen in Docker",
+      "runsInsideDocker": "Wird mit dem Docker-Image aktualisiert",
+      "upstreamDelegatedTitle": "Die verfügbare Version stammt aus dem Docker-Image",
+      "upstreamDelegatedHelp": "Diese Anwendung läuft in einem Container. Die verfügbare Version wird aus dessen Image ermittelt, ohne separate Abfrage oder doppelte Benachrichtigungen. Aktualisieren Sie das Image im Tab Aktualisierungen.",
       "closePanel": "Panel schließen",
       "cancelButton": "Stornieren",
       "saveButton": "Speichern",

AppImage/messages/en/common.json

@@ -1325,6 +1325,7 @@
       "noUpdateMethodTitle": "No update method available",
       "noUpdateMethodBody": "No update method has been identified for this application. Add a custom update command.",
       "updatedWithDockerImage": "Updated with its Docker image.",
+      "dockerBindingUnavailable": "No image is linked yet. Check the container name and refresh the image inventory.",
       "ociImmutableTitle": "OCI image container",
       "ociImmutableBody": "OS packages are baked in at image build time and cannot be updated in place. Apply updates manually or reinstall with a newer image.",
       "hideNoticeButton": "Hide this notice for this app",

AppImage/messages/es/common.json

@@ -1239,6 +1239,8 @@
       "custom": "Cron personalizado..."
     },
     "updates": {
+      "updatedWithDockerImage": "Se actualiza con su imagen Docker.",
+      "dockerBindingUnavailable": "Aún no hay una imagen vinculada. Comprueba el nombre del contenedor y actualiza el inventario de imágenes.",
       "osPackagesTitle": "Paquetes de sistema operativo",
       "lastCheckedPrefix": "Última comprobación:",
       "familyLabel": "Familia:",
@@ -1400,6 +1402,11 @@
       "loadFailed": "no se pudo cargar la configuración de actualización masiva."
     },
     "appEditor": {
+      "dockerDetectedWithWorkloads": "Docker detectado con {count} aplicaciones en contenedores",
+      "dockerWorkloadsHeading": "Aplicaciones en Docker",
+      "runsInsideDocker": "Se actualiza con su imagen Docker",
+      "upstreamDelegatedTitle": "La versión disponible proviene de su imagen Docker",
+      "upstreamDelegatedHelp": "Esta aplicación se ejecuta en un contenedor. La versión disponible se obtiene de su imagen, sin otra consulta independiente ni avisos duplicados. Actualízala desde su imagen en la pestaña Actualizaciones.",
       "closePanel": "Cerrar panel",
       "cancelButton": "Cancelar",
       "saveButton": "Guardar",

AppImage/messages/fr/common.json

@@ -1239,6 +1239,8 @@
       "custom": "Cron personnalisé…"
     },
     "updates": {
+      "updatedWithDockerImage": "Mise à jour avec son image Docker.",
+      "dockerBindingUnavailable": "Aucune image associée pour le moment. Vérifiez le nom du conteneur et actualisez l’inventaire des images.",
       "osPackagesTitle": "Packages de système d'exploitation",
       "lastCheckedPrefix": "Dernière vérification :",
       "familyLabel": "Famille:",
@@ -1400,6 +1402,11 @@
       "loadFailed": "Impossible de charger la configuration de la mise à jour groupée."
     },
     "appEditor": {
+      "dockerDetectedWithWorkloads": "Docker détecté avec {count} applications conteneurisées",
+      "dockerWorkloadsHeading": "Applications dans Docker",
+      "runsInsideDocker": "Mise à jour avec son image Docker",
+      "upstreamDelegatedTitle": "La version disponible provient de son image Docker",
+      "upstreamDelegatedHelp": "Cette application s’exécute dans un conteneur. La version disponible est déterminée par son image, sans vérification séparée ni notifications en double. Mettez son image à jour dans l’onglet Mises à jour.",
       "closePanel": "Fermer le panneau",
       "cancelButton": "Annuler",
       "saveButton": "Sauvegarder",

AppImage/messages/it/common.json

@@ -1239,6 +1239,8 @@
       "custom": "Cronologia personalizzata..."
     },
     "updates": {
+      "updatedWithDockerImage": "Si aggiorna con la sua immagine Docker.",
+      "dockerBindingUnavailable": "Nessuna immagine ancora associata. Controlla il nome del container e aggiorna l’inventario delle immagini.",
       "osPackagesTitle": "Pacchetti del sistema operativo",
       "lastCheckedPrefix": "Ultimo controllo:",
       "familyLabel": "Famiglia:",
@@ -1400,6 +1402,11 @@
       "loadFailed": "impossibile caricare la configurazione dell'aggiornamento collettivo."
     },
     "appEditor": {
+      "dockerDetectedWithWorkloads": "Docker rilevato con {count} applicazioni in container",
+      "dockerWorkloadsHeading": "Applicazioni in Docker",
+      "runsInsideDocker": "Si aggiorna con la sua immagine Docker",
+      "upstreamDelegatedTitle": "La versione disponibile proviene dalla sua immagine Docker",
+      "upstreamDelegatedHelp": "Questa applicazione viene eseguita in un container. La versione disponibile viene ricavata dalla sua immagine, senza controlli separati né notifiche duplicate. Aggiorna l’immagine nella scheda Aggiornamenti.",
       "closePanel": "Chiudi pannello",
       "cancelButton": "Cancellare",
       "saveButton": "Salva",

AppImage/messages/pt/common.json

@@ -1239,6 +1239,8 @@
       "custom": "Cronograma personalizado…"
     },
     "updates": {
+      "updatedWithDockerImage": "Atualizada através da sua imagem Docker.",
+      "dockerBindingUnavailable": "Ainda não existe uma imagem associada. Verifique o nome do contentor e atualize o inventário de imagens.",
       "osPackagesTitle": "Pacotes de sistema operacional",
       "lastCheckedPrefix": "Última verificação:",
       "familyLabel": "Família:",
@@ -1400,6 +1402,11 @@
       "loadFailed": "não foi possível carregar a configuração de atualização em massa."
     },
     "appEditor": {
+      "dockerDetectedWithWorkloads": "Docker detetado com {count} aplicações em contentores",
+      "dockerWorkloadsHeading": "Aplicações no Docker",
+      "runsInsideDocker": "Atualizada através da sua imagem Docker",
+      "upstreamDelegatedTitle": "A versão disponível provém da sua imagem Docker",
+      "upstreamDelegatedHelp": "Esta aplicação é executada num contentor. A versão disponível é obtida da sua imagem, sem uma consulta separada nem notificações duplicadas. Atualize a imagem no separador Atualizações.",
       "closePanel": "Fechar painel",
       "cancelButton": "Cancelar",
       "saveButton": "Salvar",

AppImage/messages/sk/common.json

@@ -1260,6 +1260,8 @@
       "custom": "Vlastný cron…"
     },
     "updates": {
+      "updatedWithDockerImage": "Aktualizuje sa spolu so svojím obrazom Docker.",
+      "dockerBindingUnavailable": "Zatiaľ nie je priradený žiadny obraz. Skontrolujte názov kontajnera a obnovte inventár obrazov.",
       "osPackagesTitle": "Balíky systému",
       "lastCheckedPrefix": "Naposledy skontrolované:",
       "familyLabel": "Systém:",
@@ -1421,6 +1423,11 @@
       "loadFailed": "Konfiguráciu hromadnej aktualizácie sa nepodarilo načítať."
     },
     "appEditor": {
+      "dockerDetectedWithWorkloads": "Zistený Docker s {count} aplikáciami v kontajneroch",
+      "dockerWorkloadsHeading": "Aplikácie v Dockeri",
+      "runsInsideDocker": "Aktualizuje sa spolu s obrazom Docker",
+      "upstreamDelegatedTitle": "Dostupná verzia pochádza z jej obrazu Docker",
+      "upstreamDelegatedHelp": "Táto aplikácia beží v kontajneri. Dostupná verzia sa zisťuje z jeho obrazu bez samostatnej kontroly alebo duplicitných upozornení. Obraz aktualizujte na karte Aktualizácie.",
       "closePanel": "Zavrieť panel",
       "cancelButton": "Zrušiť",
       "saveButton": "Uložiť",

AppImage/messages/sv/common.json

@@ -1239,6 +1239,8 @@
       "custom": "Anpassad cron..."
     },
     "updates": {
+      "updatedWithDockerImage": "Uppdateras med sin Docker-avbildning.",
+      "dockerBindingUnavailable": "Ingen avbildning är kopplad ännu. Kontrollera containerns namn och uppdatera avbildningsinventeringen.",
       "osPackagesTitle": "OS-paket",
       "lastCheckedPrefix": "Senast kontrollerad:",
       "familyLabel": "Familj:",
@@ -1400,6 +1402,11 @@
       "loadFailed": "Det gick inte att läsa in massuppdateringskonfigurationen."
     },
     "appEditor": {
+      "dockerDetectedWithWorkloads": "Docker hittades med {count} applikationer i containrar",
+      "dockerWorkloadsHeading": "Applikationer i Docker",
+      "runsInsideDocker": "Uppdateras med sin Docker-avbildning",
+      "upstreamDelegatedTitle": "Den tillgängliga versionen hämtas från dess Docker-avbildning",
+      "upstreamDelegatedHelp": "Den här applikationen körs i en container. Den tillgängliga versionen hämtas från dess avbildning, utan separat kontroll eller dubbla aviseringar. Uppdatera avbildningen på fliken Uppdateringar.",
       "closePanel": "Stäng panelen",
       "cancelButton": "Avbryt",
       "saveButton": "Spara",

AppImage/scripts/flask_server.py

@@ -6691,8 +6691,11 @@ def get_proxmox_vms():
                             for app in app_list
                             if isinstance(app, dict)
                         )
-                        if docker_registered and docker_inventory:
-                            vm_data['docker_inventory'] = docker_inventory
+                        if docker_inventory and (docker_registered or any(
+                            item.get('update_via') == 'docker' for item in app_list
+                        )):
+                            import lxc_apps as _docker_apps
+                            vm_data['docker_inventory'] = _docker_apps.docker_inventory_for_apps(app_list, docker_inventory)
                         # An app delegating its updates to Docker has no version
                         # of its own to offer. Resolve its image here, once, so
                         # it can show the number that image already resolved.
@@ -13404,8 +13407,6 @@ def api_vm_apps_get(vmid):
         import lxc_apps
         sidecar = lxc_apps.load_sidecar(vmid)
         payload = sidecar if sidecar else {'vmid': vmid, 'apps': []}
-        # Read the shared, file-versioned snapshot; annotate only on the way
-        # out so asynchronously collected Docker metadata remains current.
         lxc_apps.annotate_delegated_apps(payload.get('apps') or [], _get_lxc_docker_inventory_map().get(str(vmid)))
         return jsonify(payload)
     except Exception as e:
@@ -21708,10 +21709,10 @@ def _compose_scheduled_update_command(vmid: int, target: str, targets: list[str]
         for item in targets
         if item.startswith("docker-compose:")
     }
-    docker_registered = any(a.get("helper_slug") == "docker" for a in apps)
+    docker_registered = any(a.get("helper_slug") == "docker" or a.get('update_via') == 'docker' for a in apps)
     if selected_projects and docker_registered:
         try:
-            inventory = lxc_apps.get_docker_inventory(vmid, force=True)
+            inventory = lxc_apps.docker_inventory_for_apps(apps, lxc_apps.get_docker_inventory(vmid, force=True))
         except Exception:
             inventory = {}
         commands_by_project: dict[str, str] = {}
@@ -21868,14 +21869,14 @@ def _resolve_bulk_update_plan(vmid: int, targets: list[str]) -> dict:
             labels.append(label)
 
     if docker_unit_ids:
-        if not docker_app:
+        if not docker_app and not any(app.get('update_via') == 'docker' for app in apps):
             unavailable.extend({
                 'target': target_id,
                 'reason': 'Docker is no longer registered',
             } for target_id in sorted(docker_unit_ids))
         else:
             try:
-                inventory = lxc_apps.get_docker_inventory(vmid, force=True)
+                inventory = lxc_apps.docker_inventory_for_apps(apps, lxc_apps.get_docker_inventory(vmid, force=True))
             except Exception as exc:
                 inventory = {'available': False, 'error': str(exc), 'update_units': []}
             if not inventory.get('available'):
@@ -22098,11 +22099,22 @@ def _run_scheduled_update(vmid: int, sched: dict) -> dict:
     targets = list(dict.fromkeys(filtered_targets))
     if any(value.startswith("docker-") for value in targets):
         docker_registered = any(app.get("helper_slug") == "docker" for app in registered_apps)
+        delegated = any(app.get('update_via') == 'docker' for app in registered_apps)
         if not docker_registered:
-            unavailable_docker = [value for value in targets if value.startswith('docker-')]
+            allowed = set()
+            if delegated:
+                import lxc_apps
+                inventory = lxc_apps.docker_inventory_for_apps(
+                    registered_apps, lxc_apps.get_docker_inventory(vmid, force=True))
+                if inventory.get('available'):
+                    allowed.update(f"docker-compose:{p['project']}" for p in inventory.get('compose_projects') or [])
+                    allowed.update(f"docker-container:{name}" for image in inventory.get('images') or []
+                                   for name in image.get('standalone_containers') or [])
+            unavailable_docker = [value for value in targets if value.startswith('docker-') and value not in allowed]
             deferred_targets.extend(unavailable_docker)
-            targets = [value for value in targets if not value.startswith("docker-")]
-            reasons.append('Docker targets are no longer registered')
+            targets = [value for value in targets if value not in unavailable_docker]
+            if unavailable_docker:
+                reasons.append('Docker targets are no longer registered')
     if not targets:
         return finish('skipped', 'app', [])
     has_os_target = "os" in targets

AppImage/scripts/lxc_apps.py

@@ -201,6 +201,12 @@ _DOCKER_IMAGE_CONFIG_MEDIA_TYPES = {
 }
 _docker_remote_config_lock = threading.RLock()
 _docker_remote_config_cache: dict[tuple, dict] = {}
+_docker_remote_config_flights = [threading.Lock() for _ in range(16)]
+# Optional labels must never hold up the usable local/digest inventory.
+_docker_metadata_pool = concurrent.futures.ThreadPoolExecutor(max_workers=4)
+_docker_metadata_slots = threading.BoundedSemaphore(64)
+_docker_metadata_context = threading.local()
+_docker_slug_index_cache = (None, {})
 _docker_inventory_lock = threading.RLock()
 _docker_inventory_cache: dict[str, dict] = {}
 
@@ -1223,6 +1229,8 @@ def validate_config(payload: dict) -> tuple[bool, Any]:
     if method == "helper" and (not hs or hs in ("docker", "adguard")):
         return _err("a supported helper_slug is required for update_method=helper")
     conf["update_method"] = method
+    if conf.get("update_via") == "docker" and method != "none":
+        return _err("Docker-delegated apps update through their image, not a separate app updater")
 
     # Optional per-app dismiss flag for the "no update method defined"
     # notice shown in the Updates tab. Only affects the notice card;
@@ -1400,9 +1408,19 @@ def detect_installed_version(vmid, config: dict) -> tuple[Optional[str], Optiona
         return version, None
 
     if method == "docker_label":
-        # docker inspect --format '{{index .Config.Labels "<label>"}}' <container>
         fmt = '{{index .Config.Labels "' + config["label"] + '"}}'
-        rc, out, err = _pct_exec(vmid, ["docker", "inspect", "--format", fmt, config["container_name"]])
+        if config.get('update_via') == 'docker':
+            # A protected recreation preserves user container labels. Those
+            # can include the previous image's version, so delegated apps
+            # must read the immutable image actually used by the container.
+            rc, image_id, err = _pct_exec(vmid, ["docker", "inspect", "--format", "{{.Image}}", config["container_name"]])
+            image_id = image_id.strip()
+            if rc != 0 or not re.fullmatch(r'sha256:[a-f0-9]{64}', image_id):
+                return None, "could not resolve the container's installed image"
+            argv = ["docker", "image", "inspect", "--format", fmt, image_id]
+        else:
+            argv = ["docker", "inspect", "--format", fmt, config["container_name"]]
+        rc, out, err = _pct_exec(vmid, argv)
         if rc != 0:
             return None, (err or out).strip()[:200] or "docker inspect failed"
         text = (out or "").strip()
@@ -2003,6 +2021,16 @@ def _normalise_docker_container_reference(reference: str) -> str:
     return reference
 
 
+def _docker_reference_identity(reference: str) -> Optional[tuple]:
+    """Canonical mutable tag, not another alias sharing the same image ID."""
+    reference = _normalise_docker_container_reference(reference)
+    if not reference or '@' in reference or reference.startswith('sha256:'):
+        return None
+    repository, tag = reference.rsplit(':', 1)
+    parsed = _parse_docker_reference(repository, tag)
+    return (parsed['registry'], parsed['repository'], parsed['tag']) if parsed else None
+
+
 def _parse_bearer_challenge(value: str) -> Optional[dict]:
     if not isinstance(value, str) or not value.lower().startswith("bearer "):
         return None
@@ -2045,23 +2073,38 @@ def _registry_bearer_token(challenge: dict) -> tuple[Optional[str], Optional[str
         headers={"User-Agent": "ProxMenux-Monitor", "Accept": "application/json"},
     )
     try:
-        with urllib.request.urlopen(token_req, timeout=_DOCKER_REGISTRY_TIMEOUT_SEC) as response:
-            token_payload = json.loads(response.read().decode("utf-8"))
+        with urllib.request.urlopen(token_req, timeout=_docker_registry_timeout()) as response:
+            body = response.read(65537)
+            if len(body) > 65536:
+                return None, "registry token response exceeded the size limit"
+            token_payload = json.loads(body.decode("utf-8"))
     except urllib.error.HTTPError as exc:
         return None, f"registry HTTP {exc.code}"
-    except (urllib.error.URLError, TimeoutError, OSError, json.JSONDecodeError) as exc:
+    except (urllib.error.URLError, TimeoutError, OSError, ValueError) as exc:
         return None, f"registry network error: {exc}"
+    if not isinstance(token_payload, dict):
+        return None, "registry token response was not an object"
     token = token_payload.get("token") or token_payload.get("access_token")
-    if not token:
+    if not isinstance(token, str) or not token:
         return None, "registry token response was empty"
     return token, None
 
 
+def _docker_registry_timeout():
+    deadline = getattr(_docker_metadata_context, 'deadline', None)
+    if deadline is None:
+        return _DOCKER_REGISTRY_TIMEOUT_SEC
+    remaining = deadline - time.monotonic()
+    if remaining <= 0:
+        raise TimeoutError('registry metadata budget exhausted')
+    return min(_DOCKER_REGISTRY_TIMEOUT_SEC, remaining)
+
+
 def _registry_open(url: str, headers: dict, method: str, max_bytes: int):
     """One registry request. Returns (headers, body, status, location, error)."""
     req = urllib.request.Request(url, headers=headers, method=method)
     try:
-        with _docker_no_redirect_opener.open(req, timeout=_DOCKER_REGISTRY_TIMEOUT_SEC) as response:
+        with _docker_no_redirect_opener.open(req, timeout=_docker_registry_timeout()) as response:
             body = None
             if max_bytes > 0:
                 body = response.read(max_bytes + 1)
@@ -2125,6 +2168,8 @@ def _registry_request(url: str, headers: dict, method: str = "HEAD",
             return None, None, token, error
         if location:
             return None, None, token, "registry redirected more than once"
+        if status == 401:
+            return None, None, token, "registry HTTP 401"
     return response_headers, body, token, None
 
 
@@ -2163,6 +2208,8 @@ def _select_platform_manifest(index: dict, platform: dict) -> Optional[str]:
     host, a pull would fail and there is no version to report.
     """
     def _norm(entry: dict) -> tuple:
+        if not isinstance(entry, dict):
+            return '', '', ''
         os_name = str(entry.get("os") or "").lower()
         architecture = str(entry.get("architecture") or "").lower()
         variant = str(entry.get("variant") or "").lower()
@@ -2177,7 +2224,8 @@ def _select_platform_manifest(index: dict, platform: dict) -> Optional[str]:
     for entry in (index or {}).get("manifests") or []:
         if not isinstance(entry, dict):
             continue
-        if (entry.get("annotations") or {}).get("vnd.docker.reference.type"):
+        annotations = entry.get("annotations") or {}
+        if not isinstance(annotations, dict) or annotations.get("vnd.docker.reference.type"):
             continue
         candidate = _norm(entry.get("platform") or {})
         if candidate[0] in ("", "unknown") or candidate[1] in ("", "unknown"):
@@ -2202,7 +2250,10 @@ def _registry_get_document(base: str, digest: str, headers: dict, token: Optiona
     if not _verify_content_digest(body, digest):
         return None, token, "remote manifest digest mismatch"
     try:
-        return json.loads(body.decode("utf-8")), token, None
+        document = json.loads(body.decode("utf-8"))
+        if not isinstance(document, dict):
+            return None, token, "remote manifest was not an object"
+        return document, token, None
     except (UnicodeDecodeError, json.JSONDecodeError):
         return None, token, "remote manifest was not valid JSON"
 
@@ -2224,6 +2275,8 @@ def _remote_image_config_labels(parsed: dict, remote_digest: str, platform: dict
         if error:
             return None, error
     config = manifest.get("config") or {}
+    if not isinstance(config, dict):
+        return None, "remote_unsupported_manifest"
     config_digest = str(config.get("digest") or "")
     if (str(config.get("mediaType") or "") not in _DOCKER_IMAGE_CONFIG_MEDIA_TYPES
             or not config_digest.startswith("sha256:")):
@@ -2243,7 +2296,12 @@ def _remote_image_config_labels(parsed: dict, remote_digest: str, platform: dict
         payload = json.loads(body.decode("utf-8"))
     except (UnicodeDecodeError, json.JSONDecodeError):
         return None, "remote config was not valid JSON"
-    return ((payload.get("config") or {}).get("Labels") or {}), None
+    if not isinstance(payload, dict) or not isinstance(payload.get("config"), dict):
+        return None, "remote config was not an image config object"
+    labels = payload['config'].get('Labels') or {}
+    if not isinstance(labels, dict) or any(not isinstance(v, str) for v in labels.values()):
+        return None, "remote labels were not a string map"
+    return labels, None
 
 
 def _fetch_remote_image_config_labels(parsed: dict, remote_digest: str, platform: dict,
@@ -2253,18 +2311,27 @@ def _fetch_remote_image_config_labels(parsed: dict, remote_digest: str, platform
         str(parsed.get("api_host") or ""),
         str(parsed.get("repository") or ""),
         str(remote_digest or ""),
+        str((platform or {}).get("os") or ""),
         str((platform or {}).get("architecture") or ""),
+        str((platform or {}).get("variant") or ""),
     )
-    with _docker_remote_config_lock:
-        cached = _docker_remote_config_cache.get(cache_key)
-    if cached is not None:
-        return cached.get("labels"), cached.get("error")
-    labels, error = _remote_image_config_labels(parsed, remote_digest, platform)
-    with _docker_remote_config_lock:
-        if len(_docker_remote_config_cache) >= _DOCKER_REMOTE_CONFIG_CACHE_MAX:
-            _docker_remote_config_cache.clear()
-        _docker_remote_config_cache[cache_key] = {"labels": labels, "error": error}
-    return labels, error
+    with _docker_remote_config_flights[hash(cache_key) % len(_docker_remote_config_flights)]:
+        with _docker_remote_config_lock:
+            cached = _docker_remote_config_cache.get(cache_key)
+        if cached is not None:
+            return cached.get("labels"), cached.get("error")
+        try:
+            labels, error = _remote_image_config_labels(parsed, remote_digest, platform)
+        except Exception as exc:
+            return None, f"remote metadata unavailable: {type(exc).__name__}"
+        # Errors are retryable at the next explicit/lifecycle/daily refresh.
+        # Successful content is immutable because the key contains its digest.
+        if error is None:
+            with _docker_remote_config_lock:
+                if len(_docker_remote_config_cache) >= _DOCKER_REMOTE_CONFIG_CACHE_MAX:
+                    _docker_remote_config_cache.clear()
+                _docker_remote_config_cache[cache_key] = {"labels": labels, "error": None}
+        return labels, error
 
 
 _DOCKER_AVAILABLE_VERSION_REASONS = {
@@ -2518,6 +2585,23 @@ def resolve_docker_image_for_app(app: dict, inventory: dict) -> dict:
     return {"image_reference": None, "error": "container_not_in_inventory"}
 
 
+def docker_inventory_for_apps(apps: list, inventory: dict) -> dict:
+    """Expose only Docker workloads the user registered (or the whole Docker stack)."""
+    if not inventory or any(app.get('helper_slug') == 'docker' for app in apps):
+        return inventory or {}
+    references = {
+        image.get('reference') for image in inventory.get('images') or []
+        if any(app.get('update_via') == 'docker'
+               and app.get('container_name') in (image.get('used_by') or []) for app in apps)
+    }
+    images = [image for image in inventory.get('images') or [] if image.get('reference') in references]
+    return {**inventory, 'images': images,
+            'update_count': sum(image.get('update_available') is True for image in images),
+            'update_units': [unit for unit in inventory.get('update_units') or []
+                             if references.intersection(unit.get('references') or [])],
+            'compose_projects': _aggregate_docker_compose_projects(images)}
+
+
 def annotate_delegated_apps(apps: list, docker_inventory: dict) -> None:
     """Attach the image-resolved version to apps that delegate to Docker.
 
@@ -2526,7 +2610,7 @@ def annotate_delegated_apps(apps: list, docker_inventory: dict) -> None:
     The fields are namespaced so they cannot feed the CT badge or the update
     counters, where the image already contributes.
     """
-    if not apps or not docker_inventory:
+    if not apps:
         return
     try:
         for app in apps:
@@ -2539,6 +2623,8 @@ def annotate_delegated_apps(apps: list, docker_inventory: dict) -> None:
             app['docker_available_version'] = None
             app['docker_update_available'] = None
             link = resolve_docker_image_for_app(app, docker_inventory)
+            app['docker_image_reference'] = link.get('image_reference')
+            app['docker_binding_error'] = link.get('error')
             reference = link.get('image_reference')
             if not reference:
                 continue
@@ -2703,7 +2789,10 @@ def _docker_inventory_from_ct(vmid) -> dict:
             raw_image_rows.append(tuple(part.strip() for part in parts))
 
     inspected_images: dict[str, dict] = {}
-    unique_image_ids = list(dict.fromkeys(row[3] for row in raw_image_rows if row[3]))
+    unique_image_ids = list(dict.fromkeys([
+        *(row[3] for row in raw_image_rows if row[3]),
+        *(item['image_id'] for item in containers if item.get('image_id')),
+    ]))
     if unique_image_ids:
         rc_image_inspect, image_inspect_out, _ = _pct_exec(
             vmid,
@@ -2730,14 +2819,8 @@ def _docker_inventory_from_ct(vmid) -> dict:
         seen.add(parsed["reference"])
         used_by = sorted({
             item["name"] for item in containers
-            if (
-                _normalise_docker_container_reference(str(item.get("image_reference") or item.get("image") or ""))
-                == parsed["reference"]
-                or str(item.get("image_id") or item.get("image") or "")
-                in (image_id, image_id.removeprefix("sha256:"))
-                or str(item.get("image_id") or "").removeprefix("sha256:")
-                == image_id.removeprefix("sha256:")
-            )
+            if _docker_reference_identity(str(item.get("image_reference") or item.get("image") or ""))
+            == (parsed['registry'], parsed['repository'], parsed['tag'])
         })
         if not used_by:
             # Skip orphan images (no container — running or stopped —
@@ -2747,6 +2830,20 @@ def _docker_inventory_from_ct(vmid) -> dict:
             # `docker image prune` / `docker rmi` outside of ProxMenux.
             continue
         used_containers = [item for item in containers if item.get("name") in used_by]
+        # A pull can move the local tag before its containers are recreated.
+        # Inspect the image actually used by the container, not that new tag.
+        running_ids = [str(item.get('image_id') or '') for item in used_containers if item.get('image_id')]
+        actual_id = next((value for value in running_ids if value != image_id), None)
+        if actual_id:
+            image_id = actual_id
+            digest = ''
+            actual_image = inspected_images.get(actual_id) or {}
+            for repo_digest in actual_image.get('RepoDigests') or []:
+                repository_name, _, candidate_digest = repo_digest.partition('@')
+                candidate = _parse_docker_reference(repository_name, tag)
+                if candidate and (candidate['registry'], candidate['repository']) == (parsed['registry'], parsed['repository']):
+                    digest = candidate_digest
+                    break
         compose_targets: dict[str, dict] = {}
         standalone_containers: list[str] = []
         for container in used_containers:
@@ -2875,13 +2972,8 @@ def _docker_inventory_from_ct(vmid) -> dict:
             and not item.get("available_version")
             and item.get("remote_digest")
         ]
-        if pending:
-            with concurrent.futures.ThreadPoolExecutor(max_workers=min(4, len(pending))) as pool:
-                resolved = list(pool.map(_docker_available_version_from_registry, pending))
-            for item, (available_version, source) in zip(pending, resolved):
-                item["available_version_source"] = source
-                if available_version and available_version != item.get("installed_version"):
-                    item["available_version"] = available_version
+        for item in pending:
+            item["available_version_source"] = "remote_metadata_pending"
 
     return {
         "vmid": int(vmid),
@@ -2939,9 +3031,54 @@ def get_docker_inventory(vmid, force: bool = False) -> dict:
         result = pending
     with _docker_inventory_lock:
         _docker_inventory_cache[key] = result
+    _queue_docker_metadata(key, result)
     return dict(result)
 
 
+def _queue_docker_metadata(key: str, snapshot: dict) -> None:
+    """Enrich a published snapshot, never an inventory from a later CT boot.
+
+    Only a real inventory refresh schedules work. Reading a tab/cache does
+    not contact registries. Queue and concurrency are bounded globally.
+    """
+    def enrich(index, item):
+        try:
+            _docker_metadata_context.deadline = time.monotonic() + 20
+            version, source = _docker_available_version_from_registry(item)
+            with _docker_inventory_lock:
+                if _docker_inventory_cache.get(key) is not snapshot:
+                    return
+                images = list(snapshot['images'])
+                images[index] = {**images[index], 'available_version_source': source}
+                if version and version != item.get('installed_version'):
+                    images[index]['available_version'] = version
+                snapshot['images'] = images
+        except Exception:
+            # Optional metadata cannot turn a successful digest scan into an error.
+            with _docker_inventory_lock:
+                if _docker_inventory_cache.get(key) is snapshot:
+                    images = list(snapshot['images'])
+                    images[index] = {**images[index], 'available_version_source': 'remote_fetch_error'}
+                    snapshot['images'] = images
+        finally:
+            _docker_metadata_context.deadline = None
+            _docker_metadata_slots.release()
+
+    if not snapshot.get('available'):
+        return
+    for index, item in enumerate(snapshot.get('images') or []):
+        if item.get('available_version_source') != 'remote_metadata_pending':
+            continue
+        if not _docker_metadata_slots.acquire(blocking=False):
+            item['available_version_source'] = 'remote_metadata_deferred'
+            continue
+        try:
+            _docker_metadata_pool.submit(enrich, index, dict(item))
+        except Exception:
+            _docker_metadata_slots.release()
+            item['available_version_source'] = 'remote_metadata_deferred'
+
+
 def mark_docker_inventory_refreshing(vmid) -> dict:
     """Publish a non-destructive lifecycle transition for one Docker CT.
 
@@ -3801,7 +3938,6 @@ def _docker_stack_notification_payload(
             {
                 'reference': image.get('reference'),
                 'remote_digest': image.get('remote_digest'),
-                'available_version': image.get('available_version'),
             }
             for image in pending_images
         ],
@@ -3871,8 +4007,25 @@ def emit_all_pending_docker_stacks() -> int:
             ),
             None,
         )
-        if not docker_app or docker_app.get('notifications_enabled', True) is False:
-            continue
+        if docker_app:
+            if docker_app.get('notifications_enabled', True) is False:
+                continue
+        else:
+            # No automatic Docker registration: notify only images explicitly
+            # followed by delegated apps, honoring each app's notification choice.
+            references = {
+                resolve_docker_image_for_app(app, inventory).get('image_reference')
+                for app in sidecar.get('apps') or []
+                if app.get('update_via') == 'docker'
+                and app.get('notifications_enabled', True) is not False
+            } - {None}
+            if not references:
+                continue
+            inventory = {**inventory, 'images': [
+                image for image in inventory.get('images') or []
+                if image.get('reference') in references
+            ]}
+            docker_app = {}
         payload = _docker_stack_notification_payload(
             vmid, docker_app, inventory, names.get(vmid) or f'CT-{vmid}',
         )
@@ -3908,7 +4061,6 @@ def _detect_with_alt_healing(vmid, app: dict) -> tuple:
     the app dict was rewritten.
     """
     slug = app.get("helper_slug")
-    hint = (_fetch_tracking_hints() or {}).get(slug) or {}
 
     # An app whose updates are delegated to its Docker image must keep its
     # docker detector. Healing it onto a leftover /root/.<app> marker would
@@ -3918,6 +4070,8 @@ def _detect_with_alt_healing(vmid, app: dict) -> tuple:
         version, error = detect_installed_version(vmid, app)
         return version, error, False
 
+    hint = (_fetch_tracking_hints() or {}).get(slug) or {}
+
     # A modern Community Scripts marker (/root/.<app>) is a useful
     # fallback, but it is not a live process probe.  It can stay behind when
     # an operator upgrades an application outside the helper script.  When a
@@ -4770,14 +4924,22 @@ def _docker_container_slug_index() -> dict:
     the mapping conservative: a container merely called "postgres" is not
     claimed by an app, because no verified detector says it is.
     """
-    index: dict = {}
-    for slug, hint in (_fetch_tracking_hints() or {}).items():
+    global _docker_slug_index_cache
+    hints = _fetch_tracking_hints()
+    with _docker_remote_config_lock:
+        previous, index = _docker_slug_index_cache
+        if previous is hints:
+            return index
+    index = {}
+    for slug, hint in (hints or {}).items():
         for detector in _iter_hint_detectors(hint):
             if detector.get("installed_via") not in ("docker_label", "docker_exec"):
                 continue
             name = str(detector.get("container_name") or "").strip().lower()
             if name:
                 index.setdefault(name, slug)
+    with _docker_remote_config_lock:
+        _docker_slug_index_cache = (hints, index)
     return index
 
 

AppImage/scripts/tests/test_docker_delegated_apps.py

@@ -125,10 +125,6 @@ class SchedulingExclusionTests(unittest.TestCase):
         self.assertIn("a2", gated_ids)
 
 
-if __name__ == "__main__":
-    unittest.main()
-
-
 class AnnotationTests(unittest.TestCase):
     """The annotation writes into dicts that live in event-invalidated caches."""
 

AppImage/scripts/tests/test_docker_remote_image_version.py

@@ -257,10 +257,6 @@ class RegistryRedirectTests(unittest.TestCase):
         self.assertIsNone(error)
 
 
-if __name__ == "__main__":
-    unittest.main()
-
-
 class ContainerIdentityTests(unittest.TestCase):
     """A container's catalog identity comes from a detector that declares it."""
 
@@ -338,3 +334,7 @@ class UpdateNotificationWordingTests(unittest.TestCase):
             "immich",
         )
         self.assertIn("• valkey/valkey:8-bookworm: new registry digest", payload["details"])
+
+
+if __name__ == "__main__":
+    unittest.main()