Implements #547 - Add support for rootless Docker images to avoid permission issues.
Key changes:
- Add Dockerfile.rootless that runs as UID 1000 by default
- Create simplified entrypoint script without chown operations
- Add build-rootless.py to build rootless variants with -rootless suffix
- Document rootless usage in README-ROOTLESS.md
- Update main README with rootless section
The rootless images eliminate common permission problems by:
- Running as non-root from the start (USER 1000:1000)
- Avoiding recursive chown operations that can cause race conditions
- Using open permissions (777) on directories during build
- Not supporting PUID/PGID environment variables
This provides a cleaner solution for rootless Docker users and those
experiencing permission issues with volumes.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
