The CentOS, Red Hat, and Fedora package-repositories contain
several versions of the docker package. Some of those were
missing from the list of packages to uninstall, and could
conflict with the docker-ce/docker-ee package.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Restore Docker install docs for Windows Server to their original form using DockerMsftProvider for consistency with Microsoft docs. DockerProvider will be used for Insider/Preview builds only.