This container can be pulled via:
  docker pull registry.opensuse.org/virtualization/containerfile_sle15/kubevirt/virt-controller:0.47.1
  docker pull registry.opensuse.org/virtualization/containerfile_sle15/kubevirt/virt-controller:0.47.1-81.11
  docker pull registry.opensuse.org/virtualization/containerfile_sle15/kubevirt/virt-controller:0.47.1.15.157

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.