Docker Installation

安装前提：b4bit centos 7.X,kenel 3.10+
可以通过yum或者curl安装,本次选择yum安装

1. 以root或sudo权限登录linux

2. 确保yum是最新版本

   $ sudo yum update
   

3. 添加yum repo

   • vi /etc/yum.repos.d/docker.repo

   • 添加内容：

     [dockerrepo]
       name=Docker Repository
     baseurl=https://yum.dockerproject.org/repo/main/centos/7/
     enabled=1
     gpgcheck=1
     gpgkey=https://yum.dockerproject.org/gpg
     

   • :wq保存退出

4. 安装Docker Package

   $ sudo yum install docker-engine
   

5. 开启Docker后台驻留程序

   $ sudo service docker start
   

6. 验证docker是否安装成功

   $ sudo docker run hello-world
   Unable to find image 'hello-world:latest' locally
   latest: Pulling from hello-world
   a8219747be10: Pull complete
   91c95931e552: Already exists
   hello-world:latest: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security.
   Digest: sha256:aa03e5d0d5553b4c3473e89c8619cf79df368babd1.7.1cf5daeb82aab55838d
   Status: Downloaded newer image for hello-world:latest
   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.
       (Assuming it was not already locally available.)
    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
   
   For more examples and ideas, visit:
    http://docs.docker.com/userguide/
   

7. 让Docker开机自启动

   $ sudo chkconfig docker on
   

8. 注册Docker Hub账号 username:jichao password:712534

9. 终端登录

   $ docker login:
   

10. 搜索仓库：

    $ docker search centos
    

11. 拉取镜像：

    $ docker pull centos
    

12. 查看本地有哪些镜像

    $ docker images
    

13. 使用镜像启动一个容器：

    $ docker run -t -i centos /bin/bash
    

14. 终止终端,停止容器

    $ exit|Ctrl+D|$ docker stop
    

15. 终止状态容器查看：

    $ docker ps -a