ubuntu 18.04 安装docker

删除旧版本

$ sudo apt-get remove docker docker-engine docker.io containerd runc

设置ubuntu docker仓库

//安装一鞋基础软件
$ sudo apt-get update

$ sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

//添加docker官方GPG key
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
$ sudo apt-key fingerprint 0EBFCD88

//添加仓库
$ sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

//安装docker
$ sudo apt-get update
$ sudo apt-get install docker-ce docker-ce-cli containerd.io

//添加用户到组
$ sudo usermod -aG docker $USER

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

添加阿里云镜像加速器

这个要用自己到账号开通容器镜像服务

$ sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://your-code.mirror.aliyuncs.com"]
}
EOF
$ sudo systemctl daemon-reload
$ sudo systemctl restart docker

docker官方文档