I am using webpack2 (I am very new to it) in a react app.
Everything works fine when I am loading images inside the app, via the img tag. But I cannot have it working when using the image as background url inside the css.

this is my webpack:

```
`module.exports = {
  devtool:isDev ? 'cheap-module-eval-source-map' : 'source-map',
  entry: [
    'react-hot-loader/patch',
    'webpack-hot-middleware/client',
    './src/index.js'
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    publicPath: '/',
    filename: 'bundle.js'
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin()
  ],
  module: { 
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        include: path.join(__dirname, 'src'),
        use: [
          {
            loader: 'babel-loader',
            options: {
              babelrc: false, 
              presets: [
                ['es2015', {modules: false} ],
                'react',
                'stage-2'
              ],
              plugins: ['react-hot-loader/babel']
            }
          }
        ]
      },
      {
        enforce: 'pre',
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'eslint-loader',
        options: {
          failOnWarning: true,
          failOnError: true
        }
      },
      {
        test: /\.scss$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.(png|jpe?g|gif|ico)$/,
        use: 'file-loader?name=assets/[name].[hash].[ext]'
      },
      {
        test: /\.woff(\?v=\d+\.\d+\.\d+)?$/,
        use: 'url-loader?limit=10000&mimetype=application/font-woff'
      },
      {
        test: /\.woff2(\?v=\d+\.\d+\.\d+)?$/,
        use: 'url-loader?limit=10000&mimetype=application/font-woff'
      },
      {
        test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
        use: 'url-loader?limit=10000&mimetype=application/octet-stream'
      },
      {
        test: /\.eot(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'file-loader'
      },
      {
        test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
        loader: 'url-loader?prefix=assets/[name].[hash].[ext]&limit=10000&mimetype=image/svg+xml'
      },
    ]
  },
  devServer: {
    contentBase: './dist',
    hot: true
  }
};`

```

I am using express js as a server, but I think this is not relevant for the problem.

Then in my css file I have

`background: url('/assets/logo.svg');`

If I change the path I get an error but if I use the absolute path there is no error, the network tab returns 304 but if I go to localhost/assets/logo.svg it just reload the page and the logo is not loaded.
I have searched in many SO questions but I cannot figure out what is not working on my code.