dokku/tests/apps/python/app.json

{
  "healthchecks": {
    "web": [
      {
        "attempts": 2,
        "content": "python/http.server",
        "name": "check-1",
        "path": "/",
        "timeout": 5,
        "type": "startup",
        "wait": 2
      }
    ]
  },
  "scripts": {
    "dokku": {
      "postdeploy": "touch /app/postdeploy.test",
      "predeploy": "touch /app/predeploy.test"
    }
  }
}