Jenkins pipeline

def delay(int avg) {
  double min = 1000 * avg * 0.9
  double max = 1000 * avg * 1.1
  int duration = (int) (min + new Random().nextDouble()*(max - min))
  sleep(time: duration, unit: "MILLISECONDS")
}

node("python-2.7") {
  stage("build") {
    echo "entered stage: build"
    delay(3)
    echo "exited stage: build"
  }

  stage("test") {
    echo "entered stage: test"
    delay(3)
    echo "exited stage: test"
  }

  stage("package") {
    echo "entered stage: package"
    delay(3)
    echo "exited stage: package"
  }

  stage("release") {
    echo "entered stage: release"
    delay(3)
    echo "exited stage: release"
  }
}

lock("milestone-demo:test") {
  stage("deploy to test") {
    milestone()

    node("python-2.7") {
      echo "entered stage: deploy to test"
      delay(15)
      echo "exited stage: deploy to test"
    }
  }
}

stage("deploy to prod") {
  input message: "Deploy to prod?"
  milestone()

  lock("milestone-demo:prod") {
    node("python-2.7") {
      echo "entered stage: deploy to prod"
      delay(15)
      echo "exited stage: deploy to prod"
    }
  }
}