This container can be pulled via:
  docker pull registry.opensuse.org/home/jzerebecki/branches/virtualization/container/opensuse/tumbleweed/virt-controller:0.34.0
  docker pull registry.opensuse.org/home/jzerebecki/branches/virtualization/container/opensuse/tumbleweed/virt-controller:0.34.0.3.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.