nextcloud: it lives under its own name, and html is placed

The module is nextcloud; its tree was /var/lib/nextcloud-module — a
historic spelling nothing depends on. The root moves to
/var/lib/nextcloud (a rename on the node, done in this change's
window), and html drops its path: the mesh resolves it to
<root>/nextcloud/html. Landing this requires the window: rename the
tree, push, recreate the container — a changed volume path does not
recreate one by itself (hq 126).

modules/nextcloud/module.json

@@ -17,20 +17,20 @@
     }
   },
   "binds": {
-    "postgres-database": "/var/lib/nextcloud-module/database.json",
+    "postgres-database": "/var/lib/nextcloud/database.json",
-    "s3-bucket": "/var/lib/nextcloud-module/store.json",
+    "s3-bucket": "/var/lib/nextcloud/store.json",
-    "route": "/var/lib/nextcloud-module/route.json"
+    "route": "/var/lib/nextcloud/route.json"
   },
   "secrets": {
-    "postgres-database": "/var/lib/nextcloud-module/database.secret",
+    "postgres-database": "/var/lib/nextcloud/database.secret",
-    "s3-bucket": "/var/lib/nextcloud-module/store.secret"
+    "s3-bucket": "/var/lib/nextcloud/store.secret"
   },
   "emits": [
     "module.nextcloud.user.created",
     "module.nextcloud.share.created"
   ],
   "own-secrets": {
-    "admin": "/var/lib/nextcloud-module/admin.secret",
+    "admin": "/var/lib/nextcloud/admin.secret",
     "broker": "/var/lib/mesh/nextcloud/broker"
   },
   "capabilities": [
@@ -54,20 +54,19 @@
     {
       "id": "state",
       "type": "directory",
-      "path": "/var/lib/nextcloud-module",
+      "path": "/var/lib/nextcloud",
       "mode": "0700"
     },
     {
       "id": "server-env",
       "type": "file",
-      "path": "/var/lib/nextcloud-module/server.env",
+      "path": "/var/lib/nextcloud/server.env",
       "mode": "0600",
       "content": "POSTGRES_HOST=${bound:postgres-database:at}:${bound:postgres-database:port}\nPOSTGRES_DB=${bound:postgres-database:as}\nPOSTGRES_USER=${bound:postgres-database:as}\nPOSTGRES_PASSWORD=${secret:postgres-database}\nNEXTCLOUD_ADMIN_USER=mesh-admin\nNEXTCLOUD_ADMIN_PASSWORD=${secret:admin}\nOBJECTSTORE_S3_HOST=${bound:s3-bucket:at}\nOBJECTSTORE_S3_PORT=${bound:s3-bucket:port}\nOBJECTSTORE_S3_BUCKET=mesh-novox-ncloud\nOBJECTSTORE_S3_KEY=${bound:s3-bucket:as}\nOBJECTSTORE_S3_SECRET=${secret:s3-bucket}\nOBJECTSTORE_S3_SSL=false\nOBJECTSTORE_S3_USEPATH_STYLE=true\nOBJECTSTORE_S3_REGION=${bound:s3-bucket:region}\n"
     },
     {
       "id": "html",
       "type": "directory",
-      "path": "/var/lib/nextcloud-module/html",
       "mode": "0750",
       "owner": "33:33"
     },
@@ -77,13 +76,13 @@
       "name": "nextcloud",
       "image": "nextcloud@sha256:fb966733647ea03f0446b0c22eac9733c8eb616d37b960caca9d4c3010e14a08",
       "env-file": [
-        "/var/lib/nextcloud-module/server.env"
+        "/var/lib/nextcloud/server.env"
       ],
       "ports": [
         "80"
       ],
       "volumes": [
-        "/var/lib/nextcloud-module/html:/var/www/html"
+        "${dir:html}:/var/www/html"
       ],
       "secrets-in-environment": "the image honours POSTGRES_PASSWORD_FILE and NEXTCLOUD_ADMIN_PASSWORD_FILE (entrypoint file_env); OBJECTSTORE_S3_SECRET has none and needs a generated config fragment; convertible, awaiting a bed"
     },
@@ -103,7 +102,7 @@
       "volumes": [
         "/var/lib/mesh/nextcloud/broker:/run/secrets/broker:ro",
         "/var/lib/mesh/nextcloud/config.json:/run/config/config.json:ro",
-        "/var/lib/nextcloud-module/admin.secret:/run/secrets/admin:ro",
+        "/var/lib/nextcloud/admin.secret:/run/secrets/admin:ro",
         "/var/run/docker.sock:/var/run/docker.sock"
       ],
       "env": {