docker 正确安装方法

卸载旧版本

yum remove docker \

                  docker-client \

                  docker-client-latest \

                  docker-common \

                  docker-latest \

                  docker-latest-logrotate \

                  docker-logrotate \

                  docker-engine

安装需要的软件包

yum  -y install gcc gcc-c++  yum-utils  device-mapper-persistent-data lvm2

设置镜像仓库

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

更新yum 软件包索引

yum makecache fast

安装 docker CE

yum -y install docker-ce  docker-ce-cli  containerd.io

systemctl daemon-reload

systemctl restart docker

docker 镜像加速器      ###由于自带的镜像是国外比较慢的 所以使用阿里云的镜像加速器。

sudo mkdir -p /etc/docker

sudo tee /etc/docker/daemon.json <<-'EOF'

{

  "registry-mirrors": ["https://7fqrzmjb.mirror.aliyuncs.com"]

}

EOF

sudo systemctl daemon-reload

sudo systemctl restart docker