This container can be pulled via:
  docker pull registry.opensuse.org/home/illuusio/images/images_15.5/opensuse/ilmi/ovpn-admin:1.7.5
  docker pull registry.opensuse.org/home/illuusio/images/images_15.5/opensuse/ilmi/ovpn-admin:1.7.5-1.60
  docker pull registry.opensuse.org/home/illuusio/images/images_15.5/opensuse/ilmi/ovpn-admin:15.5

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.