Pipeline #1

```groovy
stage("build") {
  echo "in build"
}

stage("deploy to prod") {
  input message: "Deploy to prod?"
  milestone(ordinal: 20, label: "prod")
  echo "deploying to prod"
}
```


Pipeline #2

```groovy
stage("build") {
  echo "in build"
}

stage("deploy to test") {
  milestone(ordinal: 10, label: "test")
  echo "deploying to test"
}

stage("deploy to prod") {
  input message: "Deploy to prod?"
  milestone(ordinal: 20, label: "prod")
  echo "deploying to prod"
}
```