更新 apt-get
sudo apt-get update
![](https://img-blog.csdnimg.cn/direct/103b66ed94f045f4a21ff2a0174e188c.png)
安装软件包
sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
![](https://img-blog.csdnimg.cn/direct/b708e15dafcc4ddb96bfca47970fc874.png)
添加Docker的官方GPG密钥
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
添加 Docker 仓库
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
再次更新 apt-get
sudo apt-get update
安装 docker 社区版本
sudo apt-get install docker-ce
启动 docker
sudo systemctl status docker