changed app linkding: added form fields for initial superuser

apps/linkding/config.json

@@ -13,7 +13,23 @@
   "author": "sissbruecker",
   "source": "https://github.com/sissbruecker/linkding",
   "website": "https://www.linkding.link/",
-  "form_fields": [],
+  "form_fields": [
+    {
+      "type": "text",
+      "label": "Initial superuser name",
+      "max": "50",
+      "required": true,
+      "placeholder": "admin",
+      "env_variable": "ENV_SUPERUSER_NAME"
+    },
+    {
+      "type": "password",
+      "label": "Initial superuser password",
+      "max": "100",
+      "required": true,
+      "env_variable": "ENVLD_SUPERUSER_PASSWORD"
+    }
+  ],
   "supported_architectures": ["arm64", "amd64"],
   "created_at": 1763331296327,
   "updated_at": 1763331296327

apps/linkding/docker-compose.json

@@ -6,6 +6,10 @@
       "image": "sissbruecker/linkding:1.44.1-alpine",
       "isMain": true,
       "internalPort": 9090,
+      "environment": [
+	      {"key": "LD_SUPERUSER_NAME", "value": "ENV_SUPERUSER_NAME"},
+	      {"key": "LD_SUPERUSER_PASSWORD", "value": "ENV_SUPERUSER_PASSWORD"}
+      ],
       "volumes": [
         {
           "hostPath": "${APP_DATA_DIR}/data",
@@ -17,4 +21,4 @@
       ]
     }
   ]
-}
+