Yeah exactly, which is crucial for large images if you change only a few last layers.

The unregistry container provides a standard registry API you can pull images from as well. This could be useful in a cluster environment where you upload an image over ssh to one node and then pull it from there to other nodes.

This is what I’m planning to implement for Uncloud. Unregistry is so lightweight so we can embed it in every machine daemon. This will allow machines in the cluster to pull images from each other.