Open Container Images manipulation tool


umoci creates and modifies Open Container images. See the official website ( for more accessible documentation about how to use umoci.

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.

umoci provides tooling that can abstract all of the internals of the OCI specification into a single CLI interface.

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Install umoci