This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/clusterapi/containerfile/suse/cluster-api-controller:1.6.0
  docker pull registry.opensuse.org/isv/suse/edge/clusterapi/containerfile/suse/cluster-api-controller:1.6.0-4.45
  docker pull registry.opensuse.org/isv/suse/edge/clusterapi/containerfile/suse/cluster-api-controller:latest
  docker pull registry.opensuse.org/isv/suse/edge/clusterapi/containerfile/suse/cluster-api-controller:v1.6.0

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.