This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/3.2/images/3.2/frr:8.4
  docker pull registry.opensuse.org/isv/suse/edge/3.2/images/3.2/frr:8.4-7.4

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.