Docker从入门到精通之Docker安装

 $ sudo apt-get remove docker docker-engine docker.io containerd runc
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$ sudo apt-get purge docker-ce docker-ce-cli containerd.io
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$ sudo rm -rf /var/lib/docker
$ sudo rm -rf /var/lib/containerd
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$ sudo apt-get update
$ sudo apt-get install \
ca-certificates \ curl \
gnupg \ lsb-release
添加docker官方GPG key
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
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$ echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
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 $ sudo apt-get update
 $ sudo apt-get install docker-ce docker-ce-cli containerd.io
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$ docker -v
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$ vi /etc/docker/daemon.json
{
        "registry-mirrors": ["https://3laho3y3.mirror.aliyuncs.com"]
    }
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$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine
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设置仓库
$ sudo yum install -y yum-utils
$ sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
安装docker引擎
安装最新版本的Docker engine和containerd
$ sudo yum install docker-ce docker-ce-cli containerd.io
启动Docker
$ sudo systemctl start docker
验证docker是否安装完成
$docker -v
更改国内镜像
$ vi /etc/docker/daemon.json
{ "registry-mirrors": ["https://3laho3y3.mirror.aliyuncs.com"]
}
卸载Docker引擎
1) 卸载docker引擎、CLI和容器：
$ sudo yum remove docker-ce docker-ce-cli containerd.io
2) 上述不会删除主机上的镜像、容器、卷等。删除所有镜像、容器和卷：
$ sudo rm -rf /var/lib/docker
$ sudo rm -rf /var/lib/containerd
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$ vi /etc/docker/daemon.json
  {
        "registry-mirrors": ["https://3laho3y3.mirror.aliyuncs.com"]
  }
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