Jenkins

node('docker-builder') {
    stage 'Checkout'
        git url: 'ssh://git@[...].git',
            credentialsId: '[...]'

    stage('npm') {
        // maybe cleanup ./node_modules and similar

        def node = docker.image('digitallyseamless/nodejs-bower-grunt')
        node.pull()
        node.inside {
            sh '''
                export HOME="${PWD}"

                npm install
                bower install
                grunt build
            '''
        }
    }

       
    stage('maven') {
        def maven = docker.image('maven')
        maven.pull()
        maven.inside {
            sh '''
                export HOME="${PWD}"
                export MAVEN_CONFIG="${HOME}/.m2"
                export GIT_DESCRIBE=$(git describe --tags --dirty --long --match "build-analyzer-[0-9]*" 2>/dev/null || echo "invalid")
                
                mvn -version
                mvn package -Dmaven.repo.local="${MAVEN_CONFIG}"
            '''
        }
    }
}