ExtractTextPlugin gives images wrong path - sass

Question

I'm having troubles with compiling sass with Webpack. ExtractTextPlugin gives images wrong path, prepending 'css/' to it. When I change the filename in ExtractTextPlugin options to '/app.css', it puts app.css to the dist/ folder instead of css, but it gives the images correct path. How should I correctly specify the paths in config?
Here is my webpack.config.js:
const webpack = require('webpack')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ExtractTextPlugin = require("extract-text-webpack-plugin")
const path = require('path')
const autoprefixer = require('autoprefixer')
let isProd = process.env.NODE_ENV == 'production';
let cssDev = [
'style-loader',
'css-loader?sourseMap&importLoaders=2',
'postcss-loader',
'sass-loader'];
let cssProd = ExtractTextPlugin.extract({
allChunks: true,
fallback: "style-loader",
use: [
{
loader: 'css-loader',
options: {
minimize: false,
importLoaders: 2
}
},
{
loader: 'postcss-loader',
options: {
minimize: false
}
},
{
loader: 'sass-loader',
options: {
minimize: false
}
}
]
});
let cssConfig = isProd ? cssProd : cssDev;
module.exports | webpack.config
module.exports = {
entry: {
'js/app': './src/app.js'
},
output: {
path: path.join(__dirname, 'dist'),
filename: '[name].js',
publicPath: path.join(__dirname, 'dist')
},
module: {
rules: [
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
include: [ path.resolve(__dirname, 'src/js/') ],
loader: 'babel-loader',
query: {
presets: ['es2015'],
}
},
{
test: /\.sass$/,
use: cssConfig
},
{
test: /\.pug$/,
use: 'pug-loader?pretty=true'
},
{
test: /\.(jpe?g|png|gif|svg)$/,
use: [
'file-loader?name=[name].[ext]&publicPath=img/&outputPath=img/'
]
},
{
test: /\.(eot|svg|ttf|woff|woff2)$/,
use: 'file-loader?name=[name].[ext]&publicPath=fonts/&outputPath=fonts/'
}
]
},
devServer: {
contentBase: __dirname + '/dist',
compress: true,
port: 9000,
open: true,
hot: true,
stats: 'errors-only'
},
plugins: [
new HtmlWebpackPlugin({
title: 'Product Description',
minimize: false,
favicon: false,
hash: true,
template: './src/index.pug'
}),
new HtmlWebpackPlugin({
title: 'Distribution and Channels',
minimize: false,
favicon: false,
hash: true,
filename: 'distrib.html',
template: './src/distrib.pug'
}),
new ExtractTextPlugin({
filename: '/app.css',
publicPath: '/',
disable: !isProd,
allChunks: true
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NamedModulesPlugin(),
new webpack.LoaderOptionsPlugin({ options:
{ postcss: [
autoprefixer({
browsers: ['last 5 versions'],
supports: true,
flexbox: true
})
] }
})
]
};