Script to add/update completion scripts from Docker for Mac. Assumes that bash-completion or bash-completion@2 in installed with Homebrew

update-docker-completions.bash

#!/usr/bin/env bash

update-docker-completions() {
	local prefix suffix srcdir='/Applications/Docker.app/Contents/Resources/etc'

	# bash
	prefix='/usr/local/etc/bash_completion.d/'
	suffix=''
	for compl in "$srcdir"/*.bash-completion; do
		ln -sf "$compl" "${prefix}$(basename "${compl%.*-completion}")${suffix}"
	done

	# zsh
	prefix='/usr/local/share/zsh/site-functions/_'
	suffix=''
	for compl in "$srcdir"/*.zsh-completion; do
		ln -sf "$compl" "${prefix}$(basename "${compl%.*-completion}")${suffix}"
	done

	# fish
	prefix='/usr/local/share/fish/vendor_completions.d/'
	suffix='.fish'
	for compl in "$srcdir"/*.fish-completion; do
		ln -sf "$compl" "${prefix}$(basename "${compl%.*-completion}")${suffix}"
	done
}

[[ "$0" == "$BASH_SOURCE" ]] && update-docker-completions