dokku/tests/apps/dockerfile-app-json-formations/app.json

{
  "formation": {
    "web": {
      "quantity": 1
    }
  },
  "healthchecks": {
    "web": [
      {
        "attempts": 2,
        "content": "nodejs/express",
        "name": "check-1",
        "path": "/",
        "timeout": 5,
        "type": "startup",
        "wait": 2
      }
    ]
  }
}