* Make all doc fragments, module utils, and plugin utils private.
* Remove some unused and no longer needed imports.
This hopefully also fixes the CI issues, which do not happen locally for me...
* Fix formatting.
* Try to make CI happy, again.
* Fix imports.
* Lint.
* Remove unicode text prefixes.
* Replace str.format() uses with f-strings.
* Replace % with f-strings, and do some cleanup.
* Fix wrong variable.
* Avoid unnecessary string conversion.
* Vendor parts of the Docker SDK for Python
This is a combination of the latest git version
(db7f8b8bb6)
with some fixes to make it compatible with Python 2.7
and adjusting some imports.
* Polishing.
* Fix bug that prevents contexts to be found when no Docker config file is present.
Ref: https://github.com/docker/docker-py/issues/3190
* Linting.
* Fix typos.
* Adjust more to behavior of Docker CLI.
* Add first iteration of docker_context_info module.
* Improvements.
* Add basic CI.
* Add caveat on contexts[].config result.
