Centos7 dvd 安装docker

1：配置上网环境

2：sudo授权

vi /etc/sudoers

在行尾添加如下两行

root ALL=(ALL) ALL

docker ALL=(ALL) ALL

3：用root用户安装docker

curl -fsSLhttps://get.docker.com/ | sh

4：授权docker用户可运行docker权限

sudo usermod -aG docker docker

5：测试docker是否安装成功，使用docker用户执行如下命令

docker run hello-world

控制台讲输出

Hello from Docker.
This message shows that your installation appears to be working correctly.


To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.


To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash


Share images, automate workflows, and more with a free Docker Hub account:
 https://hub.docker.com


For more examples and ideas, visit:
 https://docs.docker.com/userguide/