This container can be pulled via:
  docker pull registry.opensuse.org/devel/openqa/containers15.6/openqa_worker:latest
  docker pull registry.opensuse.org/devel/openqa/containers15.6/opensuse/openqa-worker:5.1770752472.11415649
  docker pull registry.opensuse.org/devel/openqa/containers15.6/opensuse/openqa-worker:5.1770752472.11415649.17.1993
  docker pull registry.opensuse.org/devel/openqa/containers15.6/opensuse/openqa-worker:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.