try

scripts/build.sh

@@ -11,7 +11,7 @@ if [ -d "$BUILD_DIR" ]; then
 fi
 
 echo "-- BUILDING PRODUCTION APP --"
-cross-env NODE_ENV=production babel-node ./node_modules/.bin/webpack --config ./webpack/webpack.config.production.js
+cross-env NODE_ENV=production --config ./webpack/webpack.config.production.babel.js
 
 echo "-- COPYING REMAINING FILES --"
 

webpack/server.js

@@ -3,7 +3,7 @@ import webpack from 'webpack';
 import webpackDevMiddleware from 'webpack-dev-middleware';
 import webpackHotMiddleware from 'webpack-hot-middleware';
 
-import config from './webpack.config.development';
+import config from './webpack.config.development.babel';
 
 const app = express();
 const compiler = webpack(config);

webpack/webpack.config.development.babel.js

@@ -1,5 +1,5 @@
 import webpack from 'webpack';
-import baseConfig from './webpack.config.base';
+import baseConfig from './webpack.config.base.babel';
 
 export default {
   ...baseConfig,

webpack/webpack.config.production.babel.js

@@ -1,5 +1,5 @@
 import webpack from 'webpack';
-import baseConfig from './webpack.config.base';
+import baseConfig from './webpack.config.base.babel';
 
 export default {
   ...baseConfig,