python-docker-py is deprecated
    
    See https://pagure.io/atomic-wg/issue/413
    
    use python-docker instead. It's already pulled in as a dependency,
    but let's explicitly name it in the package list since we want it
    installed.
    
    (cherry picked from commit 28fe00a6d6e1eb0ad87b35c6534cadc29e2a618e)