This container can be pulled via:
  docker pull registry.opensuse.org/kubic/etcd:3.7.0
  docker pull registry.opensuse.org/kubic/etcd:3.7.0-0
  docker pull registry.opensuse.org/kubic/etcd:3.7.0-0.7.254
  docker pull registry.opensuse.org/kubic/etcd:3.7.0-1
  docker pull registry.opensuse.org/kubic/etcd:3.7.0-1.7.254
  docker pull registry.opensuse.org/kubic/etcd:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.