linux centos 7安装docker

1》卸载以前的版本：

$ sudo yum remove docker 
                  docker-client 
                  docker-client-latest 
                  docker-common 
                  docker-latest 
                  docker-latest-logrotate 
                  docker-logrotate 
                  docker-engine

2》安装yum-utils，设置稳定库

$ 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

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

4》启动docker

$ sudo systemctl start docke

5》查看docker版本

docker -v

6》查看已安装的镜像

sudo docker images

7》设置开机自启动

sudo systemctl enable docker

8》配置docker阿里云镜像加速

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://jwyirj9e.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

 参考官方文档：https://docs.docker.com/engine/install/centos/

 docker安装镜像：https://www.cnblogs.com/tdyang/p/12810208.html