Changes:
- Add Dockerfile Configuration section with code example
- Document Debian-based image choice (python:3.11-slim)
- Add all system dependencies (libgl1, libsm6, etc.)
- Extend Common Issues with Docker build troubleshooting
- New CI/CD section for Gitea Actions
- Document both workflows (autobuild and manual)
- Add required secrets and registry configuration
- Add version history overview