Spring Boot 專案 透過gradle 打包成 docker 專案 一步一步 教學

先透過 gradle 建立 Spring boot 專案

這邊網路有很多資源直接參考別人的

https://spring.io/guides/gs/spring-boot/

先來修改 build.gradle

//在 plugin 區塊
plugins {
    id 'org.springframework.boot' version '2.2.4.RELEASE'
    id 'io.spring.dependency-management' version '1.0.9.RELEASE'
    id 'java'
    id "com.palantir.docker" version "0.20.1"  //<---- com.palantir.docker="" span="">
}

apply plugin: "com.palantir.docker"  // <-- apply="" com.palantir.docker="" span="">

...

// 在最後增加兩個
task unpack(type: Copy) {
    dependsOn bootJar
    from(zipTree(tasks.bootJar.outputs.files.singleFile))
    into("build/dependency")
}
docker {
    name "${project.group}/${bootJar.baseName}"
    copySpec.from(tasks.unpack.outputs).into("dependency")
    buildArgs(['DEPENDENCY': "dependency"])
}

全部如下

plugins {
    id 'org.springframework.boot' version '2.2.4.RELEASE'
    id 'io.spring.dependency-management' version '1.0.9.RELEASE'
    id 'java'
    id "com.palantir.docker" version "0.20.1"
}

apply plugin: "com.palantir.docker"
    
group = 'com.domi'
version = '0.0.35'
    

ext {
        set('springBootAdminVersion', "2.2.2")
}

dependencies {

    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation "org.springframework.boot:spring-boot-starter-security"
    implementation 'org.springframework.boot:spring-boot-starter-web'
    
    implementation "org.springframework:spring-context"
    implementation 'org.springframework:spring-context-support'
    implementation 'org.springframework.boot:spring-boot-starter-quartz'
    
    implementation 'com.microsoft.azure:azure-documentdb:2.4.6'
    
    
}   

springBoot {
    buildInfo()
}   

task unpack(type: Copy) {
    dependsOn bootJar
    from(zipTree(tasks.bootJar.outputs.files.singleFile))
    into("build/dependency")
}
docker {
    name "${project.group}/${bootJar.baseName}"
    copySpec.from(tasks.unpack.outputs).into("dependency")
    buildArgs(['DEPENDENCY': "dependency"])
}

增加 DockerFile 在專案目錄下

放在跟 build.gradle 同一層 ,檔名為 Dockerfile

內容如下

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ARG DEPENDENCY=target/dependency
COPY ${DEPENDENCY}/BOOT-INF/lib /app/lib
COPY ${DEPENDENCY}/META-INF /app/META-INF
COPY ${DEPENDENCY}/BOOT-INF/classes /app
# example com.sun.test.Application
ENTRYPOINT ["java","-Denv=prod","-cp","app:app/lib/*","{這邊換成Spring boot main class}",">","/tmp/console.log"] 

如何執行

打包成 image

 gradle docker

其他的方法

docker - Builds Docker image.
dockerClean - Cleans Docker build directory.
dockerfileZip - Bundles the configured Dockerfile in a zip file
dockerPrepare - Prepares Docker build directory.
dockerPush - Pushes named Docker image to configured Docker Hub.
dockerTag - Applies all tags to the Docker image.

md code: # Spring Boot 專案 透過gradle 打包成 docker 專案 一步一步 教學 ## 先透過 gradle 建立 Spring boot 專案 這邊網路有很多資源直接參考別人的 https://spring.io/guides/gs/spring-boot/ ## 先來修改 build.gradle ```gradle //在 plugin 區塊 plugins { id 'org.springframework.boot' version '2.2.4.RELEASE' id 'io.spring.dependency-management' version '1.0.9.RELEASE' id 'java' id "com.palantir.docker" version "0.20.1" //<---- 加上 com.palantir.docker } apply plugin: "com.palantir.docker" // <-- 並 Apply com.palantir.docker ... // 在最後增加兩個 task unpack(type: Copy) { dependsOn bootJar from(zipTree(tasks.bootJar.outputs.files.singleFile)) into("build/dependency") } docker { name "${project.group}/${bootJar.baseName}" copySpec.from(tasks.unpack.outputs).into("dependency") buildArgs(['DEPENDENCY': "dependency"]) } ``` 全部如下 ```gradle plugins { id 'org.springframework.boot' version '2.2.4.RELEASE' id 'io.spring.dependency-management' version '1.0.9.RELEASE' id 'java' id "com.palantir.docker" version "0.20.1" } apply plugin: "com.palantir.docker" group = 'com.domi' version = '0.0.35' ext { set('springBootAdminVersion', "2.2.2") } dependencies { implementation 'org.springframework.boot:spring-boot-starter-data-jpa' implementation "org.springframework.boot:spring-boot-starter-security" implementation 'org.springframework.boot:spring-boot-starter-web' implementation "org.springframework:spring-context" implementation 'org.springframework:spring-context-support' implementation 'org.springframework.boot:spring-boot-starter-quartz' implementation 'com.microsoft.azure:azure-documentdb:2.4.6' } springBoot { buildInfo() } task unpack(type: Copy) { dependsOn bootJar from(zipTree(tasks.bootJar.outputs.files.singleFile)) into("build/dependency") } docker { name "${project.group}/${bootJar.baseName}" copySpec.from(tasks.unpack.outputs).into("dependency") buildArgs(['DEPENDENCY': "dependency"]) } ``` ## 增加 DockerFile 在專案目錄下 放在跟 build.gradle 同一層 ,檔名為 Dockerfile 內容如下 ```Dockerfile FROM openjdk:8-jdk-alpine VOLUME /tmp ARG DEPENDENCY=target/dependency COPY ${DEPENDENCY}/BOOT-INF/lib /app/lib COPY ${DEPENDENCY}/META-INF /app/META-INF COPY ${DEPENDENCY}/BOOT-INF/classes /app # example com.sun.test.Application ENTRYPOINT ["java","-Denv=prod","-cp","app:app/lib/*","{這邊換成Spring boot class}",">","/console.log"] ``` ## 如何執行 打包成 image ```sh gradle docker ``` 其他的方法 ```cmd docker - Builds Docker image. dockerClean - Cleans Docker build directory. dockerfileZip - Bundles the configured Dockerfile in a zip file dockerPrepare - Prepares Docker build directory. dockerPush - Pushes named Docker image to configured Docker Hub. dockerTag - Applies all tags to the Docker image. ```