一、安装与启动
备份source.list，更新镜像链接
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
vim /etc/apt/sources.list
输入99dd删除所有，输入i插入，插入一下链接
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
保存后，更新
sudo apt-get update
添加使用 https 传输的软件包和 CA证书
sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common
添加软件源的 GPG 密钥
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
添加 docker 软件源
sudo add-apt-repository "deb [arch=amd64] https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
sudo apt-get update
安装 Docker CE
sudo apt-cache madison docker-ce
sudo apt-get install docker-ce docker-ce-cli containerd.io
启动
sudo service docker start
二、遇到问题
在Ubuntu中，很多小伙伴会遇到docker启动了但是使用service docker status 查看状态时都显示“Docker is not running”，这时，首先要检查一下在windows下是否将Ubuntu 的版本设置成2，如图
查看命令 wsl -l -v
设置命令 wsl --set-version Ubuntu-18.04 2
