Unregistry – “docker push” directly to servers without a registry
I got tired of the push-to-registry/pull-from-registry dance every time I needed to deploy a Docker image. In certain cases, using a full-fledged external (or even local) registry is annoying overhead. And if you think about it, there's already a form of registry present on any of your Docker-enabled hosts — the Docker's own image storage. So I built Unregistry [1] that exposes Docker's (containerd) image storage through a standard registry API. It adds a `docker pussh` command that pushes images directly to remote Docker daemons over SSH. It transfers only the missing layers, making it…
In plain words
Unregistry allows developers to push Docker images directly to remote servers over SSH without using a separate image registry. It exposes the Docker daemon's local image storage through a standard registry API and adds a `docker pussh` command that transfers only missing layers for efficiency. The tool automatically sets up a temporary registry container on the remote host, pushes the image through an SSH tunnel, and cleans up afterward, eliminating the overhead of traditional registry workflows for straightforward deployments.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I got tired of the push-to-registry/pull-from-registry dance every time I needed to deploy a Docker image. In certain cases, using a full-fledged external (or even local) registry is annoying overhead. And if you think about it, there's already a form of registry present on any of your Docker-enabled hosts — the Docker's own image storage. So I built Unregistry [1] that exposes Docker's (containerd) image storage through a standard registry API. It adds a `docker pussh` command that pushes images directly to remote Docker daemons over SSH. It transfers only the missing layers, making it fast and efficient. docker pussh myapp:latest user@server Under the hood, it starts a temporary unregistry container on the remote host, pushes to it through an SSH tunnel, and cleans up when done. I've built it as a byproduct while working on Uncloud [2], a tool for deploying containers across a network of Docker hosts, and figured it'd be useful as a standalone project. Would love to hear your thoughts and use cases! [1]: https://github.com/psviderski/unregistry [2]: https://github.com/psviderski/uncloud
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