This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/factory/images/ironic-ipa-downloader:3.0.0
  docker pull registry.opensuse.org/isv/suse/edge/factory/images/ironic-ipa-downloader:3.0.0-31.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.