This container can be pulled via:
  docker pull registry.opensuse.org/kubic/etcd:3.5.3
  docker pull registry.opensuse.org/kubic/etcd:3.5.3-0
  docker pull registry.opensuse.org/kubic/etcd:3.5.3-0.5.253
  docker pull registry.opensuse.org/kubic/etcd:3.5.3-1
  docker pull registry.opensuse.org/kubic/etcd:3.5.3-1.5.253
  docker pull registry.opensuse.org/kubic/etcd:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.