* Move variable handling to doc fragment, and make them known to module_utils.
* Pass Daemon connection options to connection plugin.
* Add changelog fragment.
* Fix syntax error.
* Forgot 'options:'.
* Began with docker inventory plugin.
* Linting.
* Improve plugin, add basic unit tests.
* Linting.
* Add integration test.
* Adjust tests to case that there are more containers.
* There can be stopped containers.
ci_coverage
* docker -> docker_containers