java-docker/build.gradle at main · onstructive/java-docker · GitHub

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Task dockerTag = task "dockerTag" {
    group "docker"
}

Task dockerPush = task "dockerPush" {
    group "docker"
}

tasks.register("clean", Delete) {
    group "docker"
    delete file("$buildDir/docker")
}

class DockerImage {
    String repo
    String tag
    String javaVersion

    DockerImage(String repo, String tag, String javaVersion) {
        this.repo = repo
        this.tag = tag
        this.javaVersion = javaVersion
    }
}

List<DockerImage> tags = [
        new DockerImage("adoptopenjdk", "11.0.10_9-jre-hotspot", "11"),
        new DockerImage("adoptopenjdk", "12.0.2_10-jre-hotspot", "12"),
        new DockerImage("adoptopenjdk", "13.0.2_8-jre-hotspot", "13"),
        new DockerImage("adoptopenjdk", "14.0.2_12-jre-hotspot", "14"),
        new DockerImage("adoptopenjdk/openjdk15", "jre-15.0.2_7", "15"),
        new DockerImage("adoptopenjdk/openjdk16", "jre-16_36", "16"),
        new DockerImage("eclipse-temurin", "17.0.1_12-jre-focal", "17")
]

String timestamp = new Date().format('yyyyMMdd-HHmm')

tags.each { DockerImage dockerImage ->

    File dockerBuildDir = file("$buildDir/docker/${dockerImage.tag}")
    dockerBuildDir.mkdirs()


    TaskProvider<Task> dockerFileGen = tasks.register("dockerfileJava-${dockerImage.javaVersion}") {
        group 'docker'

        String dockerfileContent = file("$projectDir/src/main/docker/template/Dockerfile")
                .text.replace('${REPO}', dockerImage.repo).replace('${IMAGE_TAG}', dockerImage.tag)

        File dockerfile = new File(dockerBuildDir, 'Dockerfile')
        dockerfile.createNewFile()
        dockerfile.text = dockerfileContent
    }

    TaskProvider<Exec> dockerTagJava = tasks.register("dockerTagJava-${dockerImage.javaVersion}", Exec) {
        group 'docker'
        dependsOn dockerFileGen

        workingDir dockerBuildDir

        executable "docker"
        args = ["build", "-t", "onstructive/java:${dockerImage.tag}-${timestamp}", "-t", "onstructive/java:${dockerImage.tag}-latest", "."]

        logging.captureStandardOutput LogLevel.INFO
        logging.captureStandardError LogLevel.ERROR
    }

    TaskProvider<Exec> dockerPushJava = tasks.register("dockerPushJava-${dockerImage.javaVersion}", Exec) {
        group 'docker'
        dependsOn dockerTagJava

        workingDir dockerBuildDir

        executable "docker"
        args = ["push", "onstructive/java:${dockerImage.tag}-${timestamp}"]

        logging.captureStandardOutput LogLevel.INFO
        logging.captureStandardError LogLevel.ERROR
    }

    dockerTag.dependsOn << dockerTagJava
    dockerPush.dependsOn << dockerPushJava
}