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docker image 容器管理

发表于 分类于 Disqus：
  • Docker 管理命令
    • 容器管理
    • 镜像管理
    • 网络管理
    • 系统管理
    • 数据卷管理
    • 快照管理
    • 插件管理
    • 其他
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      • 模式管理
      • 节点管理
      • 秘钥管理
      • 服务管理
      • 服务栈管理

镜像管理 image

build

根据 dockerfile 构建镜像

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root@ubuntu:~# docker image build -t centos2 .
Sending build context to Docker daemon  19.46kB
Step 1/2 : FROM centos
 ---> a8493f5f50ff
Step 2/2 : LABEL author "lvrui"
 ---> Running in 9a996772de96
 ---> 61b7efba9133
Removing intermediate container 9a996772de96
Successfully built 61b7efba9133
root@ubuntu:~# cat dockerfile 
FROM centos
LABEL author="lvrui"
root@ubuntu:~# docker image ls
REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
centos2             latest              61b7efba9133        About a minute ago   192MB
nginx2              0.1                 7cb5220c81d5        2 hours ago          204MB
centos              latest              a8493f5f50ff        37 hours ago         192MB
nginx               latest              5766334bdaa0        41 hours ago         183MB
hello-world         latest              48b5124b2768        2 months ago         1.84kB

-t 的作用是打标签, 可以直接打成 Registry 的形式, 方便直接 push 到 Registry

如果没有打赏 Registry 地址也没有关系,后期可以通过 tag 命令修改

history

显示镜像的历史构建信息

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root@ubuntu:~# docker image ls
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
centos2             latest              61b7efba9133        2 minutes ago       192MB
nginx2              0.1                 7cb5220c81d5        2 hours ago         204MB
centos              latest              a8493f5f50ff        37 hours ago        192MB
nginx               latest              5766334bdaa0        41 hours ago        183MB
hello-world         latest              48b5124b2768        2 months ago        1.84kB
root@ubuntu:~# docker image history centos2
IMAGE               CREATED             CREATED BY                                      SIZE                COMMENT
61b7efba9133        2 minutes ago       /bin/sh -c #(nop)  LABEL author=lvrui           0B                  
a8493f5f50ff        37 hours ago        /bin/sh -c #(nop)  CMD ["/bin/bash"]            0B                  
<missing>           37 hours ago        /bin/sh -c #(nop)  LABEL name=CentOS Base ...   0B                  
<missing>           37 hours ago        /bin/sh -c #(nop) ADD file:807143da05d7013...   192MB

import/save/load

  • import 导入镜像, 导入 export 出来的镜像
  • save 导出镜像
  • load 导入镜像, 导入 save 出来的镜像

inspect

查看镜像详细信息

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root@ubuntu:~# docker image inspect centos2
[
    {
        "Id": "sha256:61b7efba9133e4ceaf4046e76a2f455a1204a8a794f16920c7543010e2759323",
        "RepoTags": [
            "centos2:latest"
        ],
        "RepoDigests": [],
        "Parent": "sha256:a8493f5f50ffda70c2eeb2d09090debf7d39c8ffcd63b43ff81b111ece6f28bf",
        "Comment": "",
        "Created": "2017-04-08T09:12:50.750877048Z",
        "Container": "9a996772de96183b48460aa1f02b907d1e8d97f8d322cc41aff909d2a8a74b61",
        "ContainerConfig": {
            "Hostname": "f85c553c1496",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "Cmd": [
                "/bin/sh",
                "-c",
                "#(nop) ",
                "LABEL author=lvrui"
            ],
            "Image": "sha256:a8493f5f50ffda70c2eeb2d09090debf7d39c8ffcd63b43ff81b111ece6f28bf",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": [],
            "Labels": {
                "author": "lvrui",
                "build-date": "20170406",
                "license": "GPLv2",
                "name": "CentOS Base Image",
                "vendor": "CentOS"
            }
        },
        "DockerVersion": "17.04.0-ce",
        "Author": "",
        "Config": {
            "Hostname": "f85c553c1496",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "Cmd": [
                "/bin/bash"
            ],
            "Image": "sha256:a8493f5f50ffda70c2eeb2d09090debf7d39c8ffcd63b43ff81b111ece6f28bf",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": [],
            "Labels": {
                "author": "lvrui",
                "build-date": "20170406",
                "license": "GPLv2",
                "name": "CentOS Base Image",
                "vendor": "CentOS"
            }
        },
        "Architecture": "amd64",
        "Os": "linux",
        "Size": 192481139,
        "VirtualSize": 192481139,
        "GraphDriver": {
            "Data": null,
            "Name": "aufs"
        },
        "RootFS": {
            "Type": "layers",
            "Layers": [
                "sha256:36018b5e978717a047892794aebab513ba6856dbe1bdfeb478ca1219df2c7e9c"
            ]
        }
    }
]

ls

作用等同于 docker images 查看镜像列表

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root@ubuntu:~# docker image ls
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
centos2             latest              61b7efba9133        3 hours ago         192MB
nginx2              0.1                 7cb5220c81d5        5 hours ago         204MB
centos              latest              a8493f5f50ff        40 hours ago        192MB
nginx               latest              5766334bdaa0        44 hours ago        183MB
hello-world         latest              48b5124b2768        2 months ago        1.84kB

prune

删除没有被引用的镜像

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root@ubuntu:~# docker image prune

tag/pull/push

  • tag: 打标签
  • pull: 从远程仓库 Registry 拉取镜像
  • push: 从本地上传镜像

从registry中拉取镜像：

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$ sudo docker pull registry.cn-beijing.aliyuncs.com/lvreg/webconsole:[镜像版本号]

将镜像推送到registry：

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$ sudo docker login --username=lvrui03@126.com registry.cn-beijing.aliyuncs.com
$ sudo docker tag [ImageId] registry.cn-beijing.aliyuncs.com/lvreg/webconsole:[镜像版本号]
$ sudo docker push registry.cn-beijing.aliyuncs.com/lvreg/webconsole:[镜像版本号]

注意: 如果 Registry 有密码, 还需要先 login 到镜像仓库才可以上传镜像

rm

删除指定的镜像

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root@ubuntu:~# docker image rm centos2:latest
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