Cannot run webpack-dev-server inside docker

Question

I have created a docker image which serves a simple react app using webpack from inside the container, but I get nothing in the browser.

Here are my config files

package.json

{   "name": "invas_client",   "version": "1.0.0",   "description": "",   "main": "index.js",   "scripts": {     "start": "webpack --inline --content-base ."   },   "author": "",   "license": "ISC",   "dependencies": {     "react": "^0.14.7",     "react-dom": "^0.14.7",     "react-router": "^2.0.0"   },   "devDependencies": {     "babel-core": "^6.5.1",     "babel-loader": "^6.2.2",     "babel-preset-es2015": "^6.5.0",     "babel-preset-react": "^6.5.0",     "http-server": "^0.8.5",     "webpack": "^1.12.13",     "webpack-dev-server": "^1.14.1"   } } 

webpack.config.js

module.exports = {     entry: './index.js',      output: {         filename: 'bundle.js',         publicPath: ''     },      module: {         loaders: [             { test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader?presets[]=es2015&presets[]=react' }         ]     } } 

Dockerfile

# Use starter image FROM node:argon  # Create app directory RUN mkdir -p /usr/src/app WORKDIR /usr/src/app  # Install app dependencies COPY package.json /usr/src/app/ RUN npm install  # Bundle app source COPY . /usr/src/app  # Expose port EXPOSE 8080  # Default command to run CMD ["npm", "start"] 

What's working fine

When I run npm start, the webpack-dev-server runs normally, and when I go to http://localhost:8080, I see my page.

What isn't working

When I run my server using docker, with the following command:

docker build -t anubhav756/app . && docker run -p 80:8080 anubhav756/app

the logs show everything working normally from inside the container, but when I point my browser to http://localhost, I get ERR_CONNECTION_RESET

Sample code's over here

Answer 1

You are actualy listening on localhost only. To be reachable from outside replace the following line in your package.json file:

"start": "webpack-dev-server --inline --content-base ." 

by :

"start": "webpack-dev-server --host 0.0.0.0 --inline --content-base ." 

Related discussion : https://github.com/webpack/webpack-dev-server/issues/147