Use the AirDC++ index page for startup health checks

oci/catalog/apps/airdcpp-webclient.json

@@ -506,7 +506,7 @@
       "startup_healthcheck": {
         "scheme": "http",
         "port": 5600,
-        "path": "/",
+        "path": "/index.html",
         "timeout_seconds": 180,
         "request_timeout_seconds": 5,
         "stability_seconds": 4,

oci/catalog/curated/airdcpp-webclient.json

@@ -506,7 +506,7 @@
       "startup_healthcheck": {
         "scheme": "http",
         "port": 5600,
-        "path": "/",
+        "path": "/index.html",
         "timeout_seconds": 180,
         "request_timeout_seconds": 5,
         "stability_seconds": 4,

oci/tests/test_airdcpp_recipe.py

@@ -27,6 +27,7 @@ class AirDCppRecipeTests(unittest.TestCase):
         for path in ('/Downloads','/Share'):
             self.assertIn('host-bind', paths[path]['installation_choice'])
         self.assertEqual(restored['catalog_ui']['architectures'], ['amd64'])
+        self.assertEqual(restored['proxmox']['installer_profile']['startup_healthcheck']['path'], '/index.html')
         self.assertEqual(restored['proxmox']['image_metadata_policy']['entrypoint'], 'import-from-oci-image')
 
     def test_wizards_preserve_managed_configuration_and_use_selected_shared_directories(self):