This container can be pulled via:
  docker pull registry.opensuse.org/home/kukuk/ei-demo/container/ei-gateway-server:20200227
  docker pull registry.opensuse.org/home/kukuk/ei-demo/container/ei-gateway-server:20200227-12.591
  docker pull registry.opensuse.org/home/kukuk/ei-demo/container/ei-gateway-server:latest