package.json

// ...
"scripts": {
    "build": "neo build --config webpack.prod.js",
    "start": "neo start --port 3001 --config webpack.dev.js",
   // ...
  }
// ...

webpack.dev.js

const devConfig = require('mozilla-neo/config/webpack.dev');

devConfig.devtool = 'cheap-inline-source-map';

devConfig.devServer.host = '0.0.0.0';
devConfig.devServer.contentBase = 'build';
//fix svg
devConfig.module.preLoaders = []; //del eslint
devConfig.module.loaders[7].query.mimetype = 'image/svg+xml';


module.exports = devConfig;

webpack.prod.js

const devConfig = require('mozilla-neo/config/webpack.prod.js');

// disable eslint
devConfig.module.preLoaders = [];

// fix svg
devConfig.module.loaders[7].query.mimetype = 'image/svg+xml';

// remove clean
devConfig.plugins = [
    devConfig.plugins[0],
    devConfig.plugins[1],
    devConfig.plugins[2],
    devConfig.plugins[4]
];


module.exports = devConfig;