最近嘗試在Mac上安裝了一下Docker環境，發現安裝方法很簡單的，但安裝之後docker命令不能自動補全，很不方便。查了一些資料找到了解決方法，在此跟大家分享一下。

安裝Homebrew

首先需要安裝Homebrew，可在官網首頁找到安裝方法：

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

安裝bash-completion

然後使用brew安裝bash-completion：

brew install bash-completion

安裝之後呼叫brew info命令，根據提示將指令新增到~/.bash_profile中：

$ brew info bash-completion
bash-completion: stable 1.3 (bottled)
Programmable completion for Bash 3.2
https://bash-completion.alioth.debian.org/
Conflicts with: [email protected]
/usr/local/Cellar/bash-completion/1.3_2 (189 files, 608.0KB) *
  Poured from bottle on 2017-03-24 at 09:59:44
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/bash-completion.rb
==> Caveats
Add the following lines to your ~/.bash_profile:
  [ -f /usr/local/etc/bash_completion ] && . /usr/local/etc/bash_completion

Bash completion has been installed to:
  /usr/local/etc/bash_completion.d
 

下載補全指令碼

執行以下命令下載補全指令碼，並儲存到bash-completion的配置目錄中：

curl -L https://raw.githubusercontent.com/docker/docker/v$(docker version -f "{{.Client.Version}}")/contrib/completion/bash/docker -o /usr/local/etc/bash_completion.d/docker

儲存成功後，重啟終端即可。

本地補全指令碼

安裝docker後，本地補全指令碼可以在/Applications/Docker.app/Contents/Resources/etc/docker.bash-completion路徑下找到。