Refactor Docker Compose configuration for wiki service and clean up db-data volume definition

wiki/docker-compose.yml

@@ -10,7 +10,6 @@ services:
     restart: unless-stopped
     volumes:
       - db-data:/var/lib/postgresql/data
-
   wiki:
     image: ghcr.io/requarks/wiki:2
     depends_on:
@@ -25,6 +24,8 @@ services:
     restart: unless-stopped
     ports:
       - 8300:3000
-
+    labels:
+      - diun.enable=true
 volumes:
-  db-data:
+  db-data: null
+networks: {}