This container can be pulled via:
  docker pull registry.opensuse.org/home/illuusio/images/images_16.0/nextcloud:16.0
  docker pull registry.opensuse.org/home/illuusio/images/images_16.0/nextcloud:32.0.2
  docker pull registry.opensuse.org/home/illuusio/images/images_16.0/nextcloud:32.0.2-17.5

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.