1. 删除旧插件：

      sudo yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-selinux \ docker-engine-selinux \ docker-engine

    2. 安装必要的工具

    sudo yum install -y yum-utils device-mapper-persistent-data lvm2

    1. 添加软件源信息：

    sudo yum-config-manager —add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

    1. 更新yum缓存：

    sudo yum makecache fast

    1. 安装docker-ce：

    sudo yum -y install docker-ce

    1. 启动+开机启动：

    sudo systemctl start docker
    sudo systemctl enable docker

    1. 镜像加速（阿里云个人加速）

      sudo mkdir -p /etc/docker sudo tee /etc/docker/daemon.json <<-‘EOF’ { “registry-mirrors”: [“https://xffjio8i.mirror.aliyuncs.com“] } EOF sudo systemctl daemon-reload sudo systemctl restart docker