fix(oci): services show their address instead of a web link, and applications are not asked for their own

oci/catalog/overlays/mariadb.json

@@ -1,6 +1,18 @@
 {
+  "catalog_ui": {
+    "launch": {
+      "port": null
+    }
+  },
+  "first_run": {
+    "endpoints": []
+  },
   "proxmox": {
     "installer_profile": {
+      "completion_notes": [
+        "MariaDB has no web interface: applications and clients connect to port 3306 of this container.",
+        "The root password is asked for when connecting from another machine. Inside the container, the mariadb command opens as root without a password."
+      ],
       "volume_preparations": [
         {
           "container_path": "/config",