python-openstackclient currently has a non-zero number of dependencies,
so for admins who would like to run it on laptops or similar it can
get tricky. In opendev, for instance, admins have it installed into
a venv on a jump host, but it's really wonky to keep up with.
Use the opendev/python-builder opendev/python-base pair to make a
minimal image that contains an install of python-openstackclient
and publish it to the osclient org on dockerhub. There is an overall
policy against having binary artifacts such as this appear to be
official deliverables of the OpenStack project, which this is not.
It's also only publishing images based on master, so no warranties
should be implied. But if this makes life easier for a user somewhere,