Node app showing container info

services/node-host/Dockerfile

+FROM node:4.6
+WORKDIR /app
+COPY ./public/ /app
+RUN npm install
+EXPOSE 3000
+CMD npm start
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services/node-host/public/index.js

+var express = require('express');
+var os = require('os')
+var app = express();
+
+function format(seconds){
+  function pad(s){
+    return (s < 10 ? '0' : '') + s;
+  }
+  var hours = Math.floor(seconds / (60*60));
+  var minutes = Math.floor(seconds % (60*60) / 60);
+  var seconds = Math.floor(seconds % 60);
+  var result = "";
+  if (hours > 0) {result = pad(hours)+ ' hours'}
+  if (minutes > 0) {result = result + pad(minutes)+ ' minutes '}
+  result = result + pad(seconds)+ ' seconds';
+  return result;
+}
+
+app.get('/', function (req, res) {
+	var uptime = process.uptime();
+ 	res.send("Hello from "+os.hostname()+" I born "+format(uptime)+" ago!");
+});
+
+var server = app.listen(3000, function () {
+	var host = server.address().address;
+	var port = server.address().port;
+	console.log('Programa de ejemplo escuchando en http://%s:%s',host,port);
+});
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services/node-host/public/package.json

+{
+	"name": "myapp",
+	"version": "0.0.1",
+	"private": true,
+	"scripts": {
+		"start": "node index.js" 
+	},
+	"engines": { 
+		"node": "^4.6.2"
+	}, 
+	"dependencies": {
+		"express": "^4.17.1" 
+	}
+}
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