I built summ as a fully self-contained and feature rich container registry. You can host it on your own server, and push/pull Docker images and Helm charts.

What's there:

- One binary with no external database or sidecar, and a web UI embedded in it

- Passes the OCI conformance suite (862 checks, 0 failures at 1.1), including the referrers API

- Can host very large number of repositories; the target is 10M repos

- Tag history, pull counts, and API-key auth (open / public-pull / private)

Several use cases I can think of:

- Use it as an ephemeral registry for CI

- Caching frequently used open source images internally (e.g. for your Kubernetes cluster)

- Visualizing image pull stats without building an analytics layer

I'd especially like to hear from people running large registries: what breaks for you today?