process.json

    {
      "name"        : "worker",
      "script"      : "./index.js",
      "instances"   : 1,
      "merge_logs"  : true,
      "log_date_format" : "YYYY-MM-DD HH:mm Z",
      "watch": true,
      "watch_options": {
        "followSymlinks": true,
        "usePolling"   : true,
        "interval"    : 5
      }
    }