Dockerfile - nodejs

Dockerfile

FROM node:0.10

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

COPY package.json /usr/src/app/

RUN npm install
COPY . /usr/src/app

CMD [ "npm", "start" ]

index.js

var app = require('express');

app.use(function (req, res){
  res.end('Hello World');
});

app.listen(process.env.PORT || 8080);

package.json

{
  "name": "test-docker",
  "version": "0.0.1",
  "scripts": {
    "start": "node ."
  },
  "dependencies": {
    "express": "*"
  }
}