1.安装docker
#1.下载docker安装包yum install -y yum-utils #2.设置镜像的仓库yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo#3.更新yum软件包索引yum makecache fast#4.安装docker -ceyum install -y docker-ce docker-ce-cli containerd.io#5.配置阿里云镜像加速sudo mkdir -p /etc/dockersudo tee /etc/docker/daemon.json <<-'EOF'{ "registry-mirrors": ["https://pl4wv5na.mirror.aliyuncs.com"]}EOFsudo systemctl daemon-reloadsudo systemctl restart docker#6.通过运行hello-world 映像来验证 Docker 引擎是否已正确安装docker run hello-world#7.否下载了 hello-world这个镜像docker images
2.卸载docker
yum remove docker-ce docker-ce-cli containerd.io#主机上的映像、容器、卷或自定义配置文件不会自动删除。要删除所有映像、容器和卷:rm -rf /var/lib/dockerrm -rf /var/lib/containerd