Jenkinsfile-basic-docker-inside

pipeline {
    agent none
    stages {
        stage('Back-end') {
            agent {
                docker {
                    image 'maven:3-alpine'
                }
            }
            steps {
              sh """
                mvn --version
                echo "my cool file" > file1.txt
              """
            }
        }
        stage('Front-end') {
            agent {
                docker {
                    image 'node:7-alpine'
                }
            }
            steps {
              sh """
                ls -l
                cat file1.txt
                node --version
                echo "my next file" > file2.txt
              """
            }
        }
        stage('Artifactory') {
            agent {
                docker {
                    image 'docker.bintray.io/jfrog/jfrog-cli-go:latest'
                    alwaysPull true
                }
            }
            steps {
              sh """
                ls -l
                cat file1.txt
                cat file2.txt
                jfrog -v
              """
            }
        }
    }
}