This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/clusterapi/containerfile-sp6/cluster-api-provider-metal3:1.7.2
  docker pull registry.opensuse.org/isv/suse/edge/clusterapi/containerfile-sp6/cluster-api-provider-metal3:1.7.2-2.3
  docker pull registry.opensuse.org/isv/suse/edge/clusterapi/containerfile-sp6/cluster-api-provider-metal3:v1.7.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.