This container can be pulled via:
  docker pull registry.opensuse.org/devel/bci/sle-15-sp3/images/bci/python:3-19.19
  docker pull registry.opensuse.org/devel/bci/sle-15-sp3/images/bci/python:3.6
  docker pull registry.opensuse.org/devel/bci/sle-15-sp3/images/bci/python:3.6-19.19

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.