This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/etcd:3.5.12
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/etcd:3.5.12-0
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/etcd:3.5.12-0.5.47
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/etcd:3.5.12-1
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/etcd:3.5.12-1.5.47

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.