Add Docker deployment support with registry integration

- Update Dockerfile to use pyproject.toml instead of requirements.txt
- Add support for Docker Hub image pulling in compose files
- Add comprehensive deployment documentation with multiple methods
- Create CLAUDE.md with development and architecture guide
- Add .dockerignore for optimized build context
- Update .env.example with Docker configuration variables
- Configure 24-hour monitoring interval by default

Changes:
- Dockerfile: Install from pyproject.toml, use main.py entry point
- docker-compose.yml: Add image option for registry deployment
- docker-compose.prod.yml: Add image option for VPS deployment
- README.md: Add Docker Hub push/pull workflows and examples
- CLAUDE.md: Comprehensive guide for AI assistants and developers
- .dockerignore: Exclude unnecessary files from Docker builds
- .env.example: Add DOCKER_USERNAME and IMAGE_TAG variables

docker-compose.prod.yml

@@ -4,9 +4,15 @@ version: '3.8'
 
 services:
   geoguessr-mcp:
+    # Option 1: Build locally
     build:
       context: .
       dockerfile: Dockerfile
+
+    # Option 2: Use pre-built image from Docker Hub (recommended for VPS)
+    # Uncomment the line below and comment out the build section above
+    # image: ${DOCKER_USERNAME:-yourusername}/geoguessr-mcp:${IMAGE_TAG:-latest}
+
     container_name: geoguessr-mcp-server
     restart: unless-stopped
     expose: