Clean up docker-compose.yml

Removed build configuration from docker-compose.yml. The image should be built
separately using 'docker build -t nlcc-itinerary:latest .' and the compose file
now just references the pre-built image with runtime configuration.

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

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

docker-compose.yml

@@ -1,17 +1,6 @@
 services:
   nlcc-itinerary:
-    build:
-      context: .
-      args:
-        - SITE_URL=https://nlcc.rydertech.us
-        - AUTH_SECRET=change-this-secret-in-production-please
-        - ADMIN_USERNAME=admin
-        - ADMIN_PASSWORD=Admin123!
-        - EMAIL_HOST=smtp.example.com
-        - EMAIL_PORT=587
-        - EMAIL_USER=noreply@example.com
-        - EMAIL_PASSWORD=your-email-password
-        - EMAIL_FROM=New Life Christian Church <noreply@example.com>
+    image: nlcc-itinerary:latest
     container_name: nlcc-itinerary
     ports:
       - "3002:3000"