chore: update Docker Compose configuration for data volume management

- Changed backend data volume mapping to use a specific host path for data storage.
- Updated updater service volume mappings to point to designated host paths for state and configuration files, streamlining the deployment process.

deploy/docker-compose.yml

@@ -8,7 +8,7 @@ services:
     environment:
       CORS_ORIGIN: ${CORS_ORIGIN:-http://localhost:3000}
     volumes:
-      - backend-data:/app/data
+      - /opt/mmapp/data:/app/data
     labels:
       mmapp.updater.managed: "true"
       mmapp.updater.target: backend
@@ -38,9 +38,5 @@ services:
       STOP_TIMEOUT_SECONDS: ${STOP_TIMEOUT_SECONDS:-30}
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
-      - updater-state:/state
-      - ./updater/targets.json.example:/etc/updater/targets.json:ro
-
-volumes:
-  backend-data:
-  updater-state:
+      - /opt/mmapp/state:/state
+      - /opt/mmapp/updater/targets.json:/etc/updater/targets.json:ro