This container can be pulled via:
  docker pull registry.opensuse.org/home/defolos/bci/cr/sle-15-sp6/containerfile/containers/apache-tomcat:9-openjdk21
  docker pull registry.opensuse.org/home/defolos/bci/cr/sle-15-sp6/containerfile/containers/apache-tomcat:9.0.91-openjdk21
  docker pull registry.opensuse.org/home/defolos/bci/cr/sle-15-sp6/containerfile/containers/apache-tomcat:9.0.91-openjdk21-56.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.