This container can be pulled via:
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/virt-controller:1.9
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/virt-controller:1.9.1
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/virt-controller:1.9.1-7.53
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/virt-controller:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.