node {

    def app

       stage('Clone repository') {
            /* Let's make sure we have the repository cloned to our workspace */

            checkout scm
        }

            stage('Build image') {
                /* This builds the actual image; synonymous to
                 * docker build on the command line */

                app = docker.build("wishi/chuckjokes")
            }

                stage('Test image') {
                    /* Ideally, we would run a test framework against our image.
                     * For this example, we're using a Volkswagen-type approach ;-) */

                    app.inside {
                        sh 'echo "Tests passed"'
                        sh 'pwd'
                    }

                    // let's not use the Volkswagen approach for security



                }

}