Build and publish images with docker/podman

SYNOPSIS

plugins {
    id 'org.implab.gradle-container' version "1.0"
}

container {
    // if you want to use podman
    cliCmd = "podman"
}

configurations {
    app
}

dependencies {
    // the application that needs to be built and packed
    app project(":server")
}

// add custom task to copy application files
// to the docker build context.
task copyApp(type: Copy) {
    processResources.dependsOn it

    into container.contextDirectory.dir("root/opt/myapp")
    from configurations.app
}

task printVersion {
    doLast {
        println "tag: ${buildImage.imageTag.get()}"
        println "archive: ${saveImage.archiveFileName.get()}"
    }
}

Description

This plugin is a simple wrapper around docker CLI. All the image building process is deligated to the Dockerfile which will run in the prepeared build context.

Project structure

• build/
  • context/ - the build context where docker build command will run.
  • imageid - the file storing the id of the image has been built.
  • image-name-1.2.3.tgz - the exported image if saveImage has been executed.
• src
  • main - the source files which will be copied to the build context.

Properties

imagesAuthority - the registry where the image should be published. for example docker.io

imagesGroup - the path to the image in the repository.

Tasks

buildImage

The task builds the image. Wrapper around the docker build command.

saveImage

The task exports image as the .tar archive.

pushImage

The task pushes the image to the remote repository.

processResources

The copy task, it prepares the build context. Use it to customize the build context.