如何在openshift上部署节点应用程序并运行它?

刚刚使用node创建了一个非常简单的hello world应用程序:

var express = require('express');
var app = express();
app.get('/', function (req, res) {
  res.send('Hello World!');
});
var server_port = process.env.OPENSHIFT_NODEJS_PORT || 8080
var server_ip_address = process.env.OPENSHIFT_NODEJS_IP || '127.0.0.1'

app.listen(server_port, server_ip_address, function () {
  console.log( "Listening on " + server_ip_address + ", port " + server_port )
});

它在我的本地机器中工作正常,

将其放在github上,并部署在openshift上,创建了pod,服务器运行良好: 但当我浏览时 the route 我可以在应用程序中找到它>&燃气轮机;路线菜单上写着:

Application is not available

The application is currently not serving requests at this endpoint. It may not have been started or is still starting.
I guess I'm using the latest version of openshift since just created an account.

我希望它能向我展示你好的世界!

更新1:

这是我的包裹。json:

{
  "name": "npmtest",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node index.js"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.16.2"
  }
}