FROM node:6.9.5

RUN mkdir question && cd question

## installing express
RUN npm install express --save
RUN npm install socket.io --save

## moving to source dir
WORKDIR question

## generating new "app.js" file from scratch
RUN echo "var express = require("express");" >> app.js
RUN echo "var app = express();" >> app.js
RUN echo "var socket = require('socket.io');" >> app.js
RUN echo "" >> app.js
RUN echo "app.get('/', function(req, res){" >> app.js
RUN echo "	res.send('Hello CIn');" >> app.js
RUN echo "});" >> app.js
RUN echo "" >> app.js
RUN echo "socket.listen(3000);" >> app.js
RUN echo "app.listen(3000);" >> app.js

EXPOSE 3000
CMD node app.js