1、安装 Bash Completion

yum install bash-completion

2、下载Docker自动补全脚本

curl -L https://raw.githubusercontent.com/docker/cli/master/contrib/completion/bash/docker -o /etc/bash_completion.d/docker

3、临时生效

source /etc/bash_completion.d/docker

4、永久生效 添加到 .bashrc

在每次启动终端时都自动加载补全，你可以将补全命令添加到你的 .bashrc 文件中

echo "source /etc/bash_completion.d/docker" >> ~/.bashrc
source ~/.bashrc