[case34]jib打包docker镜像实战

wupengyu 发布于2019-06-28 16:35 / 766人阅读

摘要：比如该目录下有，则对应该镜像目录为打包使用是在本地打包镜像，不到远程，参数是显示信息如果使用命令，则打包之后到远程输出日志实例查看镜像可以看到指定了这三个文件夹小结默认执行如下操作也就是将拷贝到，将拷贝到，将拷贝到

序

本文主要研究一下如何使用google的jib打包docker镜像

maven

            
                com.google.cloud.tools
                jib-maven-plugin
                0.9.9

配置

    
        UTF-8
        UTF-8
        1.8
        yyyyMMdd
    


    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
            
                com.google.cloud.tools
                jib-maven-plugin
                0.9.9
                
                    
                        
                            -Xms512m
                        
                        
                            8080
                        
                        true
                    
                    
                        java:8u172-jre-alpine
                    
                    
                        jib-demo:${maven.build.timestamp}
                    
                    true
                    ${project.basedir}/src/main/jib

这里指定base image为java:8u172-jre-alpine

同时指定生成的image名称为jib-demo:${maven.build.timestamp}

container标签可以指定相关参数，比如jvmFlags指定JVM参数，ports指定expose的端口号

extraDirectory用于指定要添加的目录，默认为${project.basedir}/src/main/jib，即该目录下的文件夹会在docker镜像里头同步创建，目录层级关系以jib下目录层级关系为准。比如该目录下有app/resources/demo.txt，则对应该镜像目录为/app/resources/demo.txt

打包

mvn compile jib:dockerBuild -X

使用jib:dockerBuild是在本地打包镜像，不push到远程，-X参数是显示debug信息

如果使用jib:build命令，则打包之后push到远程

输出日志实例：

[DEBUG] TIMING    Building image to Docker daemon
[DEBUG] RUNNING    Building image to Docker daemon
[INFO] Getting base image java:8u172-jre-alpine...
[DEBUG] TIMING    Pulling base image manifest
[DEBUG] RUNNING    Pulling base image manifest
[DEBUG] TIMING    Building application layers
[DEBUG] RUNNING    Building application layers
[INFO] Building dependencies layer...
[DEBUG] TIMING    Building dependencies layer
[DEBUG] RUNNING    Building dependencies layer
[INFO] Building resources layer...
[DEBUG] TIMING    Building resources layer
[DEBUG] RUNNING    Building resources layer
[INFO] Building classes layer...
[DEBUG] TIMING    Building classes layer
[DEBUG] RUNNING    Building classes layer
[INFO] Building extra files layer...
[DEBUG] TIMING    Building extra files layer
[DEBUG] RUNNING    Building extra files layer
[DEBUG] TIMED    Building application layers : 3.498 ms
[DEBUG] Building application layers : 3.498 ms
[DEBUG] Building extra files layer built sha256:0a9321c621ee2c138d9a93f4ba47f825e20dd7aca0e9206f30bf560122fdaa31
[DEBUG] Building resources layer built sha256:933116c8da4db70000355b750af2f3b5c4545e74db7b5eb0a5e37689ef86d44f
[DEBUG] Building classes layer built sha256:a99dbde7d015ba3d15b9265ac38f6536d65b00dd2a864b7003a34742f483939b
[DEBUG] TIMED    Building extra files layer : 33.718 ms
[DEBUG] TIMED    Building classes layer : 33.901 ms
[DEBUG] Building extra files layer : 33.718 ms
[DEBUG] TIMED    Building resources layer : 34.062 ms
[DEBUG] Building resources layer : 34.062 ms
[DEBUG] Building classes layer : 33.901 ms
[DEBUG] Building dependencies layer built sha256:a19961ec08095eb70ca3a070945223dcf51500a255a745272276139bf0a29f4e
[DEBUG] TIMED    Building dependencies layer : 1047.83 ms
[DEBUG] Building dependencies layer : 1047.83 ms
[INFO] The base image requires auth. Trying again for java:8u172-jre-alpine...
//......
[DEBUG] TIMED    Pulling base image manifest : 8959.891 ms
[DEBUG] Pulling base image manifest : 8959.891 ms
[DEBUG] TIMING    Setting up base image caching
[DEBUG] RUNNING    Setting up base image caching
[DEBUG] TIMED    Setting up base image caching : 0.824 ms
[DEBUG] Setting up base image caching : 0.824 ms
[DEBUG] TIMING    Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827
[DEBUG] RUNNING    Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827
[DEBUG] TIMING    Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca
[DEBUG] TIMING    Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6
[DEBUG] RUNNING    Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6
[DEBUG] TIMING    Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28
[DEBUG] RUNNING    Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28
[DEBUG] RUNNING    Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca
[DEBUG] TIMED    Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827 : 612.524 ms
[DEBUG] Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827 : 612.524 ms
[DEBUG] TIMED    Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28 : 9985.702 ms
[DEBUG] Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28 : 9985.702 ms
[DEBUG] TIMED    Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca : 27267.144 ms
[DEBUG] Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca : 27267.144 ms
[DEBUG] TIMED    Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6 : 54734.971 ms
[DEBUG] Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6 : 54734.971 ms
[DEBUG] TIMING    Building container configuration
[DEBUG] RUNNING    Building container configuration
[INFO] Finalizing...
[DEBUG] TIMED    Building container configuration : 0.462 ms
[DEBUG] Building container configuration : 0.462 ms
[INFO] Loading to Docker daemon...
[DEBUG] TIMED    Building image to Docker daemon : 65862.956 ms
[DEBUG] Building image to Docker daemon : 65862.956 ms
[INFO]
[INFO] Container entrypoint set to [java, -Xms512m, -cp, /app/resources/:/app/classes/:/app/libs/*, com.example.JibDemoApplication]
[INFO]
[INFO] Built image to Docker daemon as jib-demo:20180826
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:07 min
[INFO] Finished at: 2018-08-26T21:38:11+08:00
[INFO] Final Memory: 26M/493M
[INFO] ------------------------------------------------------------------------

查看镜像

docker inspect jib-demo:20180826
[
    {
        "Id": "sha256:7554492dde84091bc6d015b29ec4bf854bb841b9ec4d8f7bef8b51a8ec59ef94",
        "RepoTags": [
            "jib-demo:20180826"
        ],
        "RepoDigests": [],
        "Parent": "",
        "Comment": "",
        "Created": "2018-08-26T13:37:05.65Z",
        "Container": "",
        "ContainerConfig": {
            "Hostname": "",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": null,
            "Cmd": null,
            "Image": "",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": null
        },
        "DockerVersion": "",
        "Author": "",
        "Config": {
            "Hostname": "",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "8080/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/opt/jdk1.8.0_172/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "JAVA_HOME=/opt/jdk1.8.0_172"
            ],
            "Cmd": [],
            "Image": "",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": [
                "java",
                "-Xms512m",
                "-cp",
                "/app/resources/:/app/classes/:/app/libs/*",
                "com.example.JibDemoApplication"
            ],
            "OnBuild": null,
            "Labels": {}
        },
        "Architecture": "amd64",
        "Os": "linux",
        "Size": 186079594,
        "VirtualSize": 186079594,
        "GraphDriver": {
            "Data": null,
            "Name": "aufs"
        },
        "RootFS": {
            "Type": "layers",
            "Layers": [
                "sha256:cd7100a72410606589a54b932cabd804a17f9ae5b42a1882bd56d263e02b6215",
                "sha256:317e0b42ef29551507adc792c2dbc389af85c5d68900cf0f08abe907cbd4e199",
                "sha256:d6fd5302a9ee64c43b46153e9678153819d6d0e247381acbbe6cbe6ed9de0366",
                "sha256:417c6bd0930eb69d17ae5d601898a6a012900ca33c69e612840a3042b2451cbb",
                "sha256:8309a5eed5158c5639acb664312ddc7027a2ecb172744f548d6d9fb5f918a744",
                "sha256:6ef8c795d7a5e2a07f51d572a90b820e089f89adf30798193f4f3f410a261415",
                "sha256:9990447f3d37e3f2dc70718d0ea6602cf7843091d8bbe395f552c9c5dd10551c",
                "sha256:ff7910aaeee962d1d86e00742030378a2758da59d8c8cda3fe44314bbffffd8081"
            ]
        },
        "Metadata": {
            "LastTagTime": "0001-01-01T00:00:00Z"
        }
    }
]

可以看到java -cp指定了/app/libs/、/app/resources/、/app/classes/这三个文件夹

小结

jib默认执行如下操作

COPY libs /app/libs/
COPY resources /app/resources/
COPY classes /app/classes/

也就是将libs拷贝到/app/libs，将resources拷贝到/app/resources，将classes拷贝到/app/classes.

doc

jib

Building Docker Image for a Spring Boot App With Jib

build-containers-faster-with-jib-a-google-image-build-tool-for-java-applications

云服务器 GPU云服务器为何打包镜像 docker入门实战 docker技术实战 docker实战例子

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