Gradle spring-bootのdocker imagesを生成

7797 ワード
同社がDockerを使用しているため、最も理想的な状況は、開発時にミラーを与えることであり、パッケージを実装環境にアップグレードする際のエラーを回避することができる.
開発環境は基本的にEclipseであり、windowsオペレーティングシステム上であり、DockerはLinux環境に依存しているので、まずwindows環境にdockerをインストールする必要があります.参考にしてください.
  • インフラストラクチャwindowsのDocker使用
  • EclipseにGradleをインストール
  • javaコード
    • import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;
@Controller
@EnableAutoConfiguration
public class Application {
    @RequestMapping("/")
    @ResponseBody
    String home() {
        return "Hello World!";
    }
    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);
    }
}
  • build.gradle 
    •     buildscript {
       repositories {
        maven { url "http://ip:port/repository/jcenter/"}
        maven { url "http://ip:port/repository/maven-public/"}
        maven { url "http://ip:port/repository/spring-public/"}
        maven { url "http://ip:port/repository/maven-central/"}
       } 
        dependencies {
            classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.2.RELEASE")
            classpath('se.transmode.gradle:gradle-docker:1.2')
        }
    }

    apply plugin: 'java'
    apply plugin: 'eclipse'
    apply plugin: 'idea'
    apply plugin: 'org.springframework.boot'
    apply plugin: 'docker'
    
    // This is used as the docker image prefix (org)
    group = 'gregturn'
     sourceSets { 
         main { 
             java.srcDir "src"
         } 
    } 
    
  jar {
    baseName = 'gs-spring-boot-docker'
    version =  '0.1.0'
    }
    
    // tag::task[]
    task buildDocker(type: Docker, dependsOn: build) {
      push = true
      applicationName = jar.baseName
      dockerfile = file('src/Dockerfile')
      doFirst {
        copy {
          from jar
          into stageDir
        }
      }
    }
// end::task[]

   bootRepackage {
       mainClass = 'Application'
    }
    repositories {
        maven { url "http://ip:port/repository/jcenter/"}
        maven { url "http://ip:port/repository/maven-public/"}
        maven { url "http://ip:port/repository/spring-public/"}
        maven { url "http://ip:port/repository/maven-central/"}
     } 

    sourceCompatibility = JavaVersion.VERSION_1_8
    targetCompatibility = JavaVersion.VERSION_1_8
    
    dependencies {
        // tag::jetty[]
        compile("org.springframework.boot:spring-boot-starter-web") {
            exclude module: "spring-boot-starter-tomcat"
        }
        compile("org.springframework.boot:spring-boot-starter-jetty")
        // end::jetty[]
        // tag::actuator[]
        compile("org.springframework.boot:spring-boot-starter-actuator")
        // end::actuator[]
        testCompile("junit:junit")
    }
  • Dockerfileの作成srcディレクトリの下
    • FROM frolvlad/alpine-oraclejdk8:slim
VOLUME /tmp
ADD gs-spring-boot-docker-0.1.0.jar app.jar
RUN sh -c 'touch /app.jar'
ENV JAVA_OPTS=""
ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]
  • ランタイム環境を設定windows環境でdockerを設定する環境変数SET DOCKER_TLS_VERIFY=1 SET DOCKER_HOST=tcp://192.168.99.100:2376 SET DOCKER_CERT_PATH=C:\Users\lixr.docker\machine\machines\default SET DOCKER_MACHINE_NAME=default環境変数を設定しないと次のエラーが表示されます
    • Caused by: org.gradle.api.GradleException: Docker execution failed
Command line [docker build -t gregturn/gs-spring-boot-docker:latest D:\workspace\SpringBoot\build\docker] returned:
An error occurred trying to connect: 
Post http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.24/build?buildargs=%7B%7D&cgroupparent=&cpuperiod=0&cpuquota=0&
cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile&labels=%7B%7D&memory=0&memswap=0&rm=1&shmsize=0&
t=gregturn%2Fgs-spring-boot-docker%3Alatest&ulimits=null: open //./pipe/docker_engine: The system cannot find the file specified.
  • gradle build実行前設定-taskはbuildDocker実行--gradle build実行後の結果は次の通りです:
    • [sts] -----------------------------------------------------
[sts] Starting Gradle build for the following tasks: 
[sts]      buildDocker
[sts] -----------------------------------------------------
Spring Boot plugin's support for Gradle 2.2.1 is deprecated. Please upgrade to Gradle 2.9 or later.
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:findMainClass
:jar
:bootRepackage
:assemble
:compileTestJava UP-TO-DATE
:processTestResources UP-TO-DATE
:testClasses UP-TO-DATE
:test UP-TO-DATE
:check UP-TO-DATE
:build
:buildDocker
Sending build context to Docker daemon 557.1 kB
Sending build context to Docker daemon 1.114 MB
Sending build context to Docker daemon 1.671 MB
Sending build context to Docker daemon 2.228 MB
Sending build context to Docker daemon 2.785 MB
Sending build context to Docker daemon 3.342 MB
Sending build context to Docker daemon 3.899 MB
Sending build context to Docker daemon 4.456 MB
Sending build context to Docker daemon 5.014 MB
Sending build context to Docker daemon 5.571 MB
Sending build context to Docker daemon 6.128 MB
Sending build context to Docker daemon 6.685 MB
Sending build context to Docker daemon 7.242 MB
Sending build context to Docker daemon 7.799 MB
Sending build context to Docker daemon 8.356 MB
Sending build context to Docker daemon 8.913 MB
Sending build context to Docker daemon  9.47 MB
Sending build context to Docker daemon 10.03 MB
Sending build context to Docker daemon 10.58 MB
Sending build context to Docker daemon 11.14 MB
Sending build context to Docker daemon  11.7 MB
Sending build context to Docker daemon 12.26 MB
Sending build context to Docker daemon 12.81 MB
Sending build context to Docker daemon 13.37 MB
Sending build context to Docker daemon 13.93 MB
Sending build context to Docker daemon 14.08 MB
Step 1 : FROM frolvlad/alpine-oraclejdk8:slim
 ---> a290f8607aef
Step 2 : VOLUME /tmp
 ---> Using cache
 ---> 940076062032
Step 3 : ADD gs-spring-boot-docker-0.1.0.jar app.jar
 ---> e73954cc8bc1
Removing intermediate container 45e68b00fb97
Step 4 : RUN sh -c 'touch /app.jar'
 ---> Running in 3feab29e4de4
 ---> 51be10b87108
Removing intermediate container 3feab29e4de4
Step 5 : ENV JAVA_OPTS ""
 ---> Running in bcf859208dd7
 ---> fdb1998eae9c
Removing intermediate container bcf859208dd7
Step 6 : ENTRYPOINT sh -c java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar
 ---> Running in 408a0f6b60f8
 ---> 497ace0d0f8d
Removing intermediate container 408a0f6b60f8
Successfully built 497ace0d0f8d
BUILD SUCCESSFUL
Total time: 30.579 secs
[sts] -----------------------------------------------------
[sts] Build finished succesfully!
[sts] Time taken: 0 min, 31 sec
[sts] -----------------------------------------------------
  • ミラーdocker imagesを実行
    • docker@default:~$ docker images
REPOSITORY                       TAG                 IMAGE ID            CREATED             SIZE
gregturn/gs-spring-boot-docker   latest              497ace0d0f8d        12 minutes ago      195.3 MB
python                           latest              7045ed20ac61        2 weeks ago         682.7 MB
frolvlad/alpine-oraclejdk8       slim                a290f8607aef        5 weeks ago         167.2 MB

    docker run -ti -p 8080:8080 497ac
  • アクセスhttp://192.168.99.100:8080/ハローワールドを表示!
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