This container can be pulled via:
  docker pull registry.opensuse.org/devel/openqa/containers16.0/openqa_worker:latest
  docker pull registry.opensuse.org/devel/openqa/containers16.0/opensuse/openqa-worker:5.1771252154.109
  docker pull registry.opensuse.org/devel/openqa/containers16.0/opensuse/openqa-worker:5.1771252154.109.18.6
  docker pull registry.opensuse.org/devel/openqa/containers16.0/opensuse/openqa-worker:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.