umoci modifies Open Container images. Not a great name, but what are you going to do. It also is a cool way for people to "dip their toe" into OCI images ("umoci" also means "to dip" in Serbian). umoci intends to be a complete manipulation tool for OCI images. In particular, it should be seen as a more end-user-focused version of the oci-image-tools provided by the OCI. The hope is that all of this tooling will eventually be merged with the upstream repository, so that it is always kept up-to-date by the Open Container Initiative community.