This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/kubevirt/virt-controller:1.3.1
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/kubevirt/virt-controller:1.3.1-2.2
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/kubevirt/virt-controller:1.3.1.8.251

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.