I like the idea, but I'd want this functionality "unbundled".

Being able to run a registry server over the local containerd image store is great.

The details of how some other machine's containerd gets images from that registry to me is a separate concern. docker pull will work just fine provided it is given a suitable registry url and credentials. There are many ways to provide the necessary network connectivity and credentials sharing and so I don't want that aspect to be baked in.

Very slick though.

They're unbundled already. You can run unregistry as a standalone service and use your own way to push/pull from it: https://github.com/psviderski/unregistry?tab=readme-ov-file#...