This container can be pulled via:
  docker pull registry.opensuse.org/home/kukuk/15.4/container/opensuse/mariadb-client:10.5.15
  docker pull registry.opensuse.org/home/kukuk/15.4/container/opensuse/mariadb-client:10.5.15-4.104
  docker pull registry.opensuse.org/home/kukuk/15.4/container/opensuse/mariadb-client:latest