Documentation on how to load air-gap images into registry

[aetherith]

Is your feature request related to a problem? Please describe.

I am trying to load the contents of the airgap installation tarball into a Docker registry behind the airgap so all of my containerization platforms utilize the same tools to interact with their resources. I cannot seem to get either podman or skopeo to recognize the type of archive it is sufficiently to upload the images contained within.

Describe the solution you'd like

Some basic documentation on how one might load the airgap tarball into a Docker Registry when already inside the airgap. Examples using skopeo would be extra nice. Even a short script that would transform the archive into a format which library/registry:2 will read and serve out correctly would be great.

Describe alternatives you've considered

None, if there's not an easy way to load it into the registry it will be annoying but not a dealbreaker.

[brandond]

Most folks with a private registry have an existing workflow for mirroring images, or use just a simple shell script that runs docker load, docker tag, docker push and the tarball or image list. If for some reason that doesn't work for you, you might join in on the discussion at #2732