1.yum 安装gcc相关
    yum -y install gcc
    yum -y install gcc- c++
    2.卸载旧版docker
    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
    3.安装docker 仓库
    sudo yum install -y yum-utils \
    device-mapper-persistent-data \
    lvm2
    4.安装stable镜像仓库
    sudo yum-config-manager —add -repo https://download.docker.com/linux/centos/docker-ce.repo
    5.更新yum软件包索引
    yum makecache fast
    6.安装 DOCKER CE
    yum -y install docker-ce
    7启动 docker
    systemctl start docker
    8.测试
    docker version
    9.配置镜像加速
    sudo mkdir -p /etc/docker sudo vim /etc/docker/daemon.json { “registry-mirrors”: [“https://g4tzjz4g.mirror.aliyuncs.com“] } sudo systemctl daemon-reload sudo systemctl restart docker
    10.卸载
    systemctl stop docker
    yum -y remove docker-ce
    rm -rf /var/lib/docker