This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/metal3/ironic/zed/containerfile/suse/ironic:21.1.1
  docker pull registry.opensuse.org/isv/suse/edge/metal3/ironic/zed/containerfile/suse/ironic:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.