一、CentOS上安装Docker

1、卸载旧版本

$ sudo yum remove docker \
                  docker-client \

                  docker-client-latest \

                  docker-common \

                  docker-latest \

                  docker-latest-logrotate \

                  docker-logrotate \

                  docker-engine

2、设置存储库

$ sudo yum install -y yum-utils

 

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

3、安装DOCKER引擎

$ sudo yum install docker-ce docker-ce-cli containerd.io

4、启动Docker

$ sudo systemctl start docker

5、设置成自启动

$ sudo systemctl enable docker

6、查看所有镜像

$ sudo docker images

7、配置阿里云镜像加速器

$ sudo mkdir -p /etc/docker

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

  "registry-mirrors": ["https://rw4wqipd.mirror.aliyuncs.com"]

}

EOF

$ sudo systemctl daemon-reload

$ sudo systemctl restart docker