This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/arm/totest/containers/kubic/etcd:3.5.12-0.2.38
  docker pull registry.opensuse.org/opensuse/factory/arm/totest/containers/kubic/etcd:3.5.12-1.2.38

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.