pipeline {
  agent any
  stages {
    stage('Build') {
      steps {
        sh 'docker build --pull -t workout:jenkins .'
      }
    }
    stage('test') {
      steps {
        sh 'db=`docker run --rm -d postgres`'
        sh 'echo $db'
        sh 'docker image ls'
      }
    }
  }
}