[cygned]

The registry itself can be self-hosted easily, however everything on top (authentication, web UI, automation, ...) is surprisingly difficult. Plus technical challenges as pointed out by other commenters.

[kuschku]

GitLab includes a full docker registry, with all that.

Just run a custom GitLab instance, and you get all that for free.

For my open source projects on git.kuschku.de I also have a gitlab container registry on k8r.eu, and it’s been amazing to work with.

[agotterer]

AWS has a registry as well. Both solutions are and easy way to host private and public repos. But Dockerhub offers access to a huge ecosystem that everyone is already plugged into that would be devastating if it shut down. You’d potentially have to re create so many base images from scratch.

[andypanik]

Nexus also has a docker registry with all that.

[_ix]

Nexus isn’t a terrible option, but the application feels pretty dated from a deployment and maintenance perspective. We’re using it for ruby gems and internal docker registry. I haven’t looked into viable alternatives for the gems side of things—that works well enough—but we’re replacing the docker registry with gitlab.

[cygned]

Interesting, I didn’t know that. We host a registry with HTTP simple auth and it works for us because we don’t need all that.

[zawerf]

There's an on premise version of docker hub (Docker Trusted Registry I think?).