docker如何将容器做出镜像

使用docker commit命令做镜像

1. pull一个centos6.6的基础镜像，并运行一个docker container，然后在其中进行定制化（安装、配置服务等）；

[root@localhost ~]# docker pull centos:6.6  Pulling repository centos  8b44529354f3: Download complete  f1b10cd84249: Download complete  Status: Downloaded newer image for centos:6.6  [root@localhost ~]# docker images  REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE  centos              6.6                 8b44529354f3        4 days ago          202.6 MB  centos              centos6.6           8b44529354f3        4 days ago          202.6 MB  [root@localhost ~]# docker run -i -t centos:6.6 bash  [root@b42c1ba929a9 /]# ls  bin  dev  etc  home  lib  lib64  lost+found  media  mnt  opt  proc  root  sbin  selinux  srv  sys  tmp  usr  var  [root@b42c1ba929a9 /]# mkdir /tmp/test.txt  [root@b42c1ba929a9 /]# exit  exit

接下来，查看一下container的改动：

[root@localhost ~]# docker ps -a  CONTAINER ID        IMAGE               COMMAND             CREATED              STATUS                      PORTS               NAMES  b42c1ba929a9        centos:6.6          "bash"              About a minute ago   Exited (0) 22 seconds ago                       berserk_mcclintock  804a56ce8008        f1b10cd84249        "/bin/echo hello"   22 minutes ago                                                       test  [root@localhost ~]# docker diff b42c1ba929a9  C /tmp  A /tmp/test.txt  C /root  A /root/.bash_history

2. 执行docker commit命令创建一个镜像：

[root@localhost ~]# docker commit -m "new container" b42c1ba929a9 yuanhuan/newcontainer1  07b146e0be9e98c253122784c3837dd1604f7692e794f3601dad747d41901cd4  [root@localhost ~]# docker images  REPOSITORY               TAG                 IMAGE ID            CREATED             VIRTUAL SIZE  yuanhuan/newcontainer1   latest              07b146e0be9e        43 seconds ago      202.6 MB  centos                   6.6                 8b44529354f3        4 days ago          202.6 MB  centos                   centos6.6           8b44529354f3        4 days ago          202.6 MB

3. 登录docker，并将该镜像push到docker仓库：

[root@localhost ~]# docker login  Username: yuanhuan  Password:  Email: yuanhuan_2005@126.com  Login Succeeded  [root@localhost ~]# docker push yuanhuan/newcontainer1  The push refers to a repository [yuanhuan/newcontainer1] (len: 1)  Sending image list  Pushing repository yuanhuan/newcontainer1 (1 tags)  f1b10cd84249: Image already pushed, skipping  8b44529354f3: Image already pushed, skipping  07b146e0be9e: Image successfully pushed  Pushing tag for rev [07b146e0be9e] on {https://cdn-registry-1.docker.io/v1/repositories/yuanhuan/newcontainer1/tags/latest}

作者：网易云社区；来源：简书；链接：https://www.jianshu.com/p/6d85f32c2e35

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