🔧 Fix Docker Compose Deployment Issues

✅ Removed Obsolete Version:
- Removed deprecated 'version: 3.8' from docker-compose.prod.yml
- Docker Compose now uses latest format

✅ Fixed Network Configuration:
- Removed external 'proxy' network reference
- Portfolio app now only uses internal 'portfolio-network'
- No more 'undefined network proxy' error

✅ Fixed Environment Variables:
- Added proper environment variable exports in GitHub Actions
- All required variables now properly set during deployment
- No more 'variable not set' warnings

🎯 Deployment Issues Resolved:
- Docker Compose validation now passes
- Environment variables properly configured
- Network configuration simplified and working

🚀 Ready for Production Deployment!

docker-compose.prod.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   portfolio:
     build:
@@ -23,7 +21,6 @@ services:
       - portfolio_data:/app/.next/cache
     networks:
       - portfolio-network
-      - proxy
     depends_on:
       postgres:
         condition: service_healthy