- Add app_ports table for storing port mappings per app
- Add Port model with CRUD operations
- Add handlers for adding/deleting port mappings
- Add ports section to app detail template
- Update Docker client to configure port bindings when creating containers
- Support both TCP and UDP protocols
- Add HandleAppRestart, HandleAppStop, HandleAppStart handlers
- Wire up POST routes for /apps/{id}/restart, /stop, /start
- Use helper function to reduce code duplication