Specify publicPath in all vendor build configs (otherwise, file-loader won't generate correct URLs to any static resources from the vendor bundle)

templates/ReactReduxSpa/webpack.config.vendor.js

@@ -19,6 +19,7 @@ module.exports = {
     },
     output: {
         path: path.join(__dirname, 'wwwroot', 'dist'),
+        publicPath: '/dist/',
         filename: '[name].js',
         library: '[name]_[hash]',
     },