This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/containerfile/opensuse/memcached:1.6
  docker pull registry.opensuse.org/opensuse/factory/zsystems/containerfile/opensuse/memcached:1.6.17
  docker pull registry.opensuse.org/opensuse/factory/zsystems/containerfile/opensuse/memcached:1.6.17-3.409
  docker pull registry.opensuse.org/opensuse/factory/zsystems/containerfile/opensuse/memcached:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.