- Create Dockerfile for building bootc with Rust and OSTree support
- Add comprehensive CI workflow based on bootupd-sdboot pattern
- Includes apt-cacher-ng support for faster builds
- Builds bootc from composefs-backend branch
- Creates Debian package with proper dependencies
- Uploads to Forgejo Debian Registry
- Uses docker cp to transfer files from container to host
- Includes all three bootc binaries: bootc, system-reinstall-bootc, bootc-initramfs-setup
