This container can be pulled via:
  docker pull registry.opensuse.org/home/msirringhaus/firefox-container/opensuse_factory_containerfile/opensuse/bci/firefox:135.0
  docker pull registry.opensuse.org/home/msirringhaus/firefox-container/opensuse_factory_containerfile/opensuse/bci/firefox:135.0-6.122
  docker pull registry.opensuse.org/home/msirringhaus/firefox-container/opensuse_factory_containerfile/opensuse/bci/firefox:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.