Jenkinsfile – Build & Publish Docker In Docker

The Jenkinsfile below shows how build and publish a  Docker image to Docker registry on a Dockerized Jenkins node:

//Running on Docker node

node(DOCKER_IMAGE){

deleteDir()

checkout([$class: ‘GitSCM’, branches: [[name: “${git_branch}”]], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs:     [[credentialsId: ‘abc’, url: GIT_URL]]])

stage(‘docker build, tag & push’){

//credentials for Docker registry

withCredentials([usernamePassword(credentialsId: ‘dockerpush’, passwordVariable: ‘pass’, usernameVariable: ‘user’)]) {

dir(“${dockerfile_path}”)
{

//Build the Docker image
def dockerImage=docker.build(“${docker_source_image_tag}”)

//Tag the image

sh ‘docker tag “${docker_source_image_tag}” “${docker_target_image_tag}”‘

docker.withRegistry(‘https://docker-test.com’, ‘dockerpush’) {

//Log into the Docker registry

sh “docker login -u ${user} -p ${pass} https://docker-test.com”

//Push the image

dockerImage.push(‘latest’)
}

}

}
}

}