Docker - NodeJS Hello World

Use this document as a way to quickly start any new project.
All you get is this text and a mostly barebones HTML document.

---

Create a barebones NodeJS application

Create a directory named "docnode". Initialize your application ("npm init"). Install express ("npm install express --save"). Your "package.json" file should look like the following.

{
  "name": "docnode",
  "version": "1.0.0",
  "description": "barebones node on docker",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "abel@mit.edu",
  "license": "MIT",
  "dependencies": {
    "express": "^4.15.5"
  }
}

Add a barebones express server. Name your file "index.js"

var express = require('express');
var app     = express();

app.get('/', function(req,res){
  res.send('Hello World!');
});

var port = 3000;
app.listen(port,function(){
  console.log('Listening on port:' + port);
});

Create a docker file. Name it "Dockerfile"

FROM node:slim

MAINTAINER abelsan <abel@mit.edu>

WORKDIR /app

# copy code, install npm dependencies
COPY index.js /app/index.js
COPY package.json /app/package.json
RUN npm install

Create a docker compose file. Name it "docker-compose.yml"

version: "2"

services:
  gin:
    build: .
    ports:
      - "3000:3000"

If needed, copy your code to the remote machine. Once there, at the command line, enter "docker-compose up"

docker-compose up