1、安装docker
[root@c741 ~]# yum install docker-ce
2、启动服务
[root@c741 ~]# systemctl enable docker.service
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@c741 ~]# systemctl start docker.service
3、配置镜像源
配置中科大的镜像源，没有文件新建文件
[root@c741 ~]# vi /etc/docker/daemon.json
{
"registry-mirrors":["https://docker.mirrors.ustc.edu.cn"]
}
也可以配置163或则阿里云的源
163的源如下所示
daemon.json
{
"registry-mirrors": ["http://hub-mirror.c.163.com"]
}
4、测试运行hello-world
[root@c741 docker]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:92695bc579f31df7a63da6922075d0666e565ceccad16b59c3374d2cf4e8e50e
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
.....
5、查看并删除镜像
查看镜像
[root@c741 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest fce289e99eb9 3 months ago 1.84kB
删除镜像
[root@c741 ~]# docker rmi fce289e99eb9
Untagged: hello-world:latest
Untagged: hello-world@sha256:92695bc579f31df7a63da6922075d0666e565ceccad16b59c3374d2cf4e8e50e
Deleted: sha256:fce289e99eb9bca977dae136fbe2a82b6b7d4c372474c9235adc1741675f587e
Deleted: sha256:af0b15c8625bb1938f1d7b17081031f649fd14e6b233688eea3c5483994a66a3
参考：
https://www.runoob.com/docker/docker-tutorial.html
