Add complete Docker configuration for containerized deployment. Files added: - Dockerfile: Multi-stage Python 3.11 image with cron scheduler - docker-compose.yml: Simple deployment configuration - docker-entrypoint.sh: Startup script with validation - .dockerignore: Build optimization Features: - Automated cron scheduling (daily at 1 PM UTC) - Health checks (verifies cron is running) - Log rotation (10MB max, 3 files) - Auto-restart on failure - Environment-based configuration - Single command deployment: docker compose up -d The container runs cron internally and streams logs to stdout, making it production-ready and easy to monitor. Updated README with comprehensive Docker deployment documentation including quick start, configuration, testing, and production deployment best practices. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>