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docker如何将容器做出镜像?做出镜像可以使用commit命令或dockerfile的方式,commit命令比较简单,相当于docker根据container内部执行的命令自动生成dockerfile,并进行了build,比较适合对dockerfile不熟悉的用户;dockerfile比较适合批量处理的场景。
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_history2. 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 MB3. 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 {cmy.cn/host/作者:网易云社区;来源:简书;链接:cmy.cn/host/
本公司的容器云产品是通过docker技术,在云计算集群服务器上部署容器云服务实现,功能强大、简单易用,可自由选择网络计费方式,可作集群服务,自由搭建私有网络。
高性价比的容器云产品链接 cmy.cn/host/
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