This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/harvester/containers/dev/15.7/suse/sles/15.7/virt-controller:1.7.0
  docker pull registry.opensuse.org/isv/rancher/harvester/containers/dev/15.7/suse/sles/15.7/virt-controller:1.7.0-150700.11.1
  docker pull registry.opensuse.org/isv/rancher/harvester/containers/dev/15.7/suse/sles/15.7/virt-controller:1.7.0.29.18.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.