1、centos7上安装docker
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum-config-manager --enable docker-ce-edge
sudo yum-config-manager --enable docker-ce-test
sudo yum install -y docker-ce
sudo systemctl start docker
sudo systemctl enable docker
2、更换docker的镜像仓库为私有仓库+daoclound镜像
curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://f1361db2.m.daocloud.io

vi /etc/docker/daemon.json

{
"registry-mirrors": ["http://f1361db2.m.daocloud.io"],
"insecure-registries":["192.168.118.77"]
}

systemctl daemon-reload

systemctl restart docker

3、登录阿里云镜像仓库
sudo docker login --username=hatqiang registry.cn-shanghai.aliyuncs.com

4、拉取 docker pull centos:7

5、运行：
docker run -itd --name="hatcentos7" centos:7 /bin/bash

docker rm xxx

docker rmi imagename

6、Dockerfile
docker build -t helloworld .

7、Docker搭建WorldPress
docker pull wordpress:latest
docker pull mysql:latest
docker run --name mysqlwp -e MYSQL_ROOT_PASSWORD=wordpressdocker
-e MYSQL_DATABASE=wordpress
-e MYSQL_USER=wordpress
-e MYSQL_PASSWORD=wordpresspwd
-d mysql
docker run --name wordpress --link mysqlwp:mysql -p 80:80
-e WORDPRESS_DB_NAME=wordpress
-e WORDPRESS_DB_USER=wordpress
-e WORDPRESS_DB_PASSWORD=wordpresspwd
-d wordpress
firewall-cmd --zone=public --add-port=80/tcp --permanent
systemctl restart firewalld.service

8、删除所有容器
docker stop (docker ps -aq)

9、docker inspect xx

10、荣期间共享数据
docker run -v /data --name data ubuntu:14.04
docker run -ti --volumes-from data ubuntu:14.04 /bin/bash

--volumes-from

11、docker cp
docker cp xx:/root/file.txt
docker cp hatcentos7:/test.txt /root/test.txt