Update volume paths in production Docker Compose override

Modified the volume mappings for static and media files to target `/app` directories instead of `/usr/share/nginx/html`. This ensures consistency across container services and aligns with the application's directory structure. Added missing volume mappings for the "manage" service.

docker-compose.prod.override.yml

@@ -6,8 +6,8 @@ services:
       - traefik
       - db
     volumes:
-      - /mnt/data/feo-homepage/static:/usr/share/nginx/html/static:ro
+      - /mnt/data/feo-homepage/static:/app/static
-      - /mnt/data/feo-homepage/media:/usr/share/nginx/html/media:ro
+      - /mnt/data/feo-homepage/media:/app/media
     labels:
       - traefik.enable=true
       - traefik.docker.network=traefik
@@ -18,6 +18,9 @@ services:
 
   manage:
     restart: no
+    volumes:
+      - /mnt/data/feo-homepage/static:/app/static
+      - /mnt/data/feo-homepage/media:/app/media
     networks:
       - default
       - db