Something like this worked for me. I am guessing this should work for you.
Run webpack-dev using this
webpack-dev-server --host 0.0.0.0 --port 80
And set this in webpack.config.js
entry: [
'webpack-dev-server/client?http://0.0.0.0:80',
config.paths.demo
]
Note If you are using hot loading, you will have to do this.
Run webpack-dev using this
webpack-dev-server --host 0.0.0.0 --port 80
And set this in webpack.config.js
entry: [
'webpack-dev-server/client?http://0.0.0.0:80',
'webpack/hot/only-dev-server',
config.paths.demo
],
....
plugins:[new webpack.HotModuleReplacementPlugin()]