When removing an image by name, do not remove the image and all its
tags, even if force is set. Instead, just untag the specified name.
Note: adjust the load test to preserve the order in the untagged field.
Also vendor in the latest HEAD in containers/image to fix a bug revealed
in Podman CI.
Context: containers/podman/issues/10685
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Add unit tests for loading images. This covers the most important
formats of docker-archive and oci-archive.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>