chore: add email and frontend URL environment variables to docker-compose-build.yml for build parity

docker-compose-build.yml

@@ -11,6 +11,14 @@ services:
       - uploads:/app/uploads
     environment:
       - NODE_ENV=production
+      - EMAIL_HOST=smtp.example.com
+      - EMAIL_PORT=587
+      - EMAIL_USER=your@email.com
+      - EMAIL_PASS=yourpassword
+      - EMAIL_FROM_NAME=RSVP Manager
+      - EMAIL_FROM_ADDRESS=your@email.com
+      - EMAIL_SECURE=false
+      - FRONTEND_BASE_URL=https://your-frontend-domain.com
     restart: unless-stopped
 
 volumes: