Re: [libvirt] [PATCH] ci: Fetch list of available container images dynamically

Any static list of images is destined to become outdated eventually, so let's start generating it dynamically instead. Unfortunately there doesn't seem to be a straightforward way to get Podman/Docker to list all repositories under quay.io/libvirt, so we have to resort to searching and filtering manually; and since the two tools behave slightly differently in that regard, it's more sane to have the logic in a separate shell script than it would be to keep it inline in the Makefile with all the annoying escaping that would entail. Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt;