Add CORS for staging domain and update docker-compose

- Add https://staging.autonetsellcar.com to CORS allowed origins
- Update docker-compose.staging.yml to use .env file and correct paths

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/app/main.py

@@ -171,6 +171,8 @@ app.add_middleware(
         "http://192.168.0.202:8001",  # Staging backend
         "https://autonetsellcar.com",  # Production domain
         "http://autonetsellcar.com",   # Production (HTTP redirect)
+        "https://staging.autonetsellcar.com",  # Staging domain
+        "http://staging.autonetsellcar.com",   # Staging (HTTP redirect)
     ],
     allow_credentials=True,
     allow_methods=["*"],

docker-compose.staging.yml

@@ -4,18 +4,17 @@ services:
       context: ./frontend
       dockerfile: Dockerfile
       args:
-        - NEXT_PUBLIC_API_URL=
+        - NEXT_PUBLIC_API_URL=https://staging.autonetsellcar.com
     container_name: autonet-frontend-staging
     ports:
       - "3001:3000"
     environment:
-      - NODE_ENV=staging
+      - NODE_ENV=production
-      - BACKEND_URL=http://backend-staging:8000
     depends_on:
       - backend-staging
     restart: unless-stopped
     networks:
-      - autonet-staging
+      - mongolcar-network
 
   backend-staging:
     build:
@@ -24,15 +23,14 @@ services:
     container_name: autonet-backend-staging
     ports:
       - "8001:8000"
-    environment:
+    env_file:
-      - ENV=staging
+      - ./backend/.env
     volumes:
-      - /opt/autonet/production/backend/uploads:/app/uploads
+      - /opt/autonet/staging/backend/uploads:/app/uploads
-      - /opt/autonet/production/backend/autonet.db:/app/autonet.db
     restart: unless-stopped
     networks:
-      - autonet-staging
+      - mongolcar-network
 
 networks:
-  autonet-staging:
+  mongolcar-network:
-    name: autonet-staging-network
+    external: true