• 卸载旧版本

  sudo apt-get remove docker <br /> docker-engine <br /> docker.io

• 使用apt安装

  sudo apt-get update

  sudo apt-get install <br /> apt-transport-https <br /> ca-certificates <br /> curl <br /> gnupg <br /> lsb-release

• 添加软件源GPG秘钥

  curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

• 添加docker软件源

  echo <br /> "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu <br /> $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

• 安装Docker

  sudo apt-get update
  sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin

• 启动Docker

  sudo systemctl enable docker
  sudo systemctl start docker

• 建立用户组并将当前用户加入docker组

  sudo groupadd docker #添加docker组
  sudo usermod -aG docker $USER #将当前用户加入docker组

• 测试Docker是否安装正确

  docker run --rm hello-world

重要：设置Docker镜像加速

• 查看是否为docker.service中配置过镜像地址

  systemctl cat docker | grep '--registry-mirror'

• 具体配置如下：在/etc/docker/daemon.json中写入以下内容

  {
  "registry-mirrors": [
  "https://docker.mirrors.ustc.edu.cn",
  "https://hub-mirror.c.163.com",
  "https://mirror.baidubce.com"
  ]
  }

• 重启服务

  sudo systemctl daemon-reload
  sudo systemctl restart docker

• 使用docker info查看加速器是否生效

  Registry Mirrors:
  https://hub-mirror.c.163.com/

  sudo apt-get purge docker-ce docker-ce-cli containerd.io docker-compose-plugin
  sudo rm -rf /var/lib/docker
  sudo rm -rf /var/lib/containerd