Unregistry: A Lightweight Docker Image Registry for Effortless Transfers

Unregistry is a lightweight container image registry that stores and serves images directly from your Docker daemon's storage. The `docker pussh` command allows pushing images to remote Docker servers over SSH, transferring only missing layers for speed and efficiency. Bypass the complexities of Docker Hub or self-hosted registries; simply use `docker pussh myapp:latest user@server` for a direct, simple transfer. It establishes an SSH tunnel, runs a temporary Unregistry container, pushes only missing layers, then closes the tunnel. Perfect for production deployments, CI/CD pipelines, and air-gapped environments.