Remove direct port exposure for the application container

Remove the exposed port mapping for the application service in docker-compose.yml to prevent port conflicts, as Nginx now handles external access via the Docker network.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/p0c5kxJ

docker-compose.yml

@@ -31,8 +31,10 @@ services:
       dockerfile: Dockerfile
     container_name: socialflow-app
     restart: unless-stopped
-    ports:
-      - "${PORT:-5000}:5000"
+    # Port non exposé publiquement car nginx reverse proxy accède via le réseau Docker
+    # Décommentez si vous avez besoin d'accéder directement sans nginx :
+    # ports:
+    #   - "${PORT:-5000}:5000"
     environment:
       NODE_ENV: production
       PORT: 5000