fix: Update CI/CD deployment to use active compose.yml file

- Fix deployment script to copy docker-compose.prod.yml to compose.yml (not docker-compose.yml)
- Update all docker-compose commands to use -f compose.yml explicitly
- Rename legacy deploy-synology/docker-compose.yml to .old
- This should fix the deployment issue where VPS wasn't getting updated

.github/workflows/ci-cd.yml

@@ -198,30 +198,30 @@ jobs:
           # Pull latest changes using Personal Access Token
           git pull https://$DEPLOY_TOKEN@github.com/remmerinio/stiftung-management-system.git main
           
-          # Copy production docker compose file
+          # Copy production docker compose file to the active compose.yml
-          cp deploy-production/docker-compose.prod.yml docker-compose.yml
+          cp deploy-production/docker-compose.prod.yml compose.yml
           
           # Login to GitHub Container Registry
           echo $GITHUB_TOKEN | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
           
           # Pull latest images
-          docker-compose pull
+          docker-compose -f compose.yml pull
           
           # Stop containers
-          docker-compose down
+          docker-compose -f compose.yml down
           
           # Start containers with latest images
-          docker-compose up -d
+          docker-compose -f compose.yml up -d
           
           # Wait for containers to be ready
           echo "Waiting for containers to start..."
           sleep 30
           
           # Run migrations
-          docker-compose exec -T web python manage.py migrate
+          docker-compose -f compose.yml exec -T web python manage.py migrate
           
           # Collect static files
-          docker-compose exec -T web python manage.py collectstatic --noinput
+          docker-compose -f compose.yml exec -T web python manage.py collectstatic --noinput
           
           # Show container status
-          docker-compose ps
+          docker-compose -f compose.yml ps