Jenkinsfile

#!/usr/bin/env groovy

// Deploy Hello World Service Stack

node('java') {
    properties([parameters([
        choice(choices: ["ci", "dev", "test", "uat"].join("\n"),
            description: 'Environment', name: 'ENVIRONMENT')
    ])])
    stage('Git Checkout') {
        dir('service') {
            git branch: 'master',
                credentialsId: 'jenkins_github_credentials',
                url: 'ssh://git@garystafford/hello-world.git'
        }
        dir('credentials') {
            git branch: 'master',
                credentialsId: 'jenkins_github_credentials',
                url: 'ssh://git@garystafford/ucp-bundle-jenkins.git'
        }
    }
    dir('service') {
        stage('Build and Unit Test') {
            sh './gradlew clean cleanTest build'
        }
        withEnv(["IMAGE=hello-world:${BUILD_NUMBER}"]) {
            stage('Docker Build Image') {
                withCredentials([[$class: 'StringBinding', 
                                  credentialsId: 'docker_username', 
                                  variable: 'DOCKER_PASSWORD'],
                                 [$class: 'StringBinding', 
                                  credentialsId: 'docker_username', 
                                  variable: 'DOCKER_USERNAME']]) {
                    sh "docker login -u ${DOCKER_USERNAME} -p ${DOCKER_PASSWORD} ${DTR_URL}"
                }
                sh "docker build --no-cache -t ${DTR_URL}/${IMAGE} ."
            }
            stage('Docker Push Image') {
                sh "docker push ${DTR_URL}/${IMAGE}"
            }
            withEnv(['DOCKER_TLS_VERIFY=1',
                     "DOCKER_CERT_PATH=${WORKSPACE}/credentials/",
                     "DOCKER_HOST=${DOCKER_HOST}"]) {
                stage('Docker Stack Deploy') {
                    try {
                        sh "docker service rm ${params.ENVIRONMENT}_hello-world"
                        sh 'sleep 30s' // wait for service to be completely removed if it exists
                    } catch (err) {
                        echo "Error: ${err}" // catach and move on if it doesn't already exist
                    }
                    sh "docker stack deploy \
                        --compose-file=docker-compose.yml ${params.ENVIRONMENT}"
                }
            }
        }
    }
}