Add fish shell completions from github.com/barnybug/docker-fish-completion Upstream-commit: 10137a561c280cd9ba36ffb62bb7696989f4072c Component: engine
The `contrib` directory contains scripts, images, and other helpful things which are not part of the core docker distribution. Please note that they could be out of date, since they do not receive the same attention as the rest of the repository.