fix(docker-compose): revert to bridge network for Docker Compose mode

Dokploy's Docker Compose option uses docker compose up (not stack deploy),
so bridge networks work correctly. Overlay was needed only for Stack mode.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -37,7 +37,6 @@ volumes:
 
 networks:
   internal:
-    driver: overlay
-    attachable: true
+    driver: bridge
   dokploy-network:
     external: true