How to start webpack-dev-server with existing php project?

Question

webpack

Good afternoon!
Tell me how to configure the scripts to be updated during reassembly?
webpack config

{
    entry: {
        app: './project1/bootstrap.js',
        vendor: './project1/vendor.js'
    },
    output: {
        chunkFilename: '[name].[chunkhash].js',
        filename: '[name].[chunkhash].js',
        path: path.resolve(__dirname, '../public/project1'),
        publicPath: '/project1/'
    },

    devtool: 'eval',
}

It is launched using the webpack --config webpack.project1.js --watch
Project Server command on 127.0.0.15
I tried to set it up using google guides, but it did not work out.