This will add an option to use an external set of command-line tools (skopeo, umoci, oci-image-tool) to do the image pull and extraction. This should allow support for newer parts of the standard and should be faster than the current built-in methods.
Coverage increased (+0.2%) to 78.485% when pulling 81a79adfe7b661d483228f6bc401235f0b7f3bb2 on scanon:feature/skopeo into d6370b61c6a45f873c5ac64f160c39a8f016ab86 on NERSC:master.
This will add an option to use an external set of command-line tools (skopeo, umoci, oci-image-tool) to do the image pull and extraction. This should allow support for newer parts of the standard and should be faster than the current built-in methods.