problem description

this is my directory structure. I want to merge all the scss files under the css2 folder into one css file and package them to the build directory

extractTextPluginscss
scssscssjsimport
100scssscss

configuration file

const path = require("path");
const glob = require("glob");
const htmlPlugin = require("html-webpack-plugin");
const extractTextPlugin = require("extract-text-webpack-plugin");
const webpack = require("webpack");


var imJsFile = glob.sync("./im/js/core2/**/*.js");


var config = {
    entry:{
        entry:imJsFile
    },
    output:{
        path:path.resolve(__dirname,"build/im"),
        filename:"./js/sp.im.min.js"
    },
    devServer:{
        contentBase:path.resolve(__dirname,"build"),
        host:"localhost",
        compress:true,
        port:1717
    },
    module:{
        rules:[
            
            {
                test: /\.scss$/,
                use: extractTextPlugin.extract({
                    use: [{
                        loader: "css-loader"
                    }, {
                        loader: "sass-loader"
                    }],
                    fallback: "style-loader"
                })
             }
        ]
    },
    plugins:[
        new webpack.ProvidePlugin({
            jQuery:"jquery"
        }),
        new extractTextPlugin("/css/[name].css")
    ]
};

var viesObj = getView("im/view/onlineservice/chat2/*.html");
var pages = Object.keys(viesObj);
pages.forEach(function(pathname) {
    var htmlName = viesObj[pathname]
    var conf = {
        filename: "./view/" + htmlName + ".html", //htmlpath
        template: "./im/view/onlineservice/chat2/" + htmlName + ".html", //html
        hash: true, //hash
        //chunks: ["common",htmlName],//chunk
        minify: { //HTML    
            removeAttributeQuotes:true, //
            removeComments: true, //HTML
            collapseWhitespace: false //
        }
    };
    config.plugins.push(new htmlPlugin(conf));
});


module.exports = config;

function getView(globPath, pathDir) {
    var files = glob.sync(globPath);
    var entries = {},
        entry, dirname, basename, pathname, extname;

    for (var i = 0; i < files.length; iPP) {
        entry = files[i];
        dirname = path.dirname(entry);  //  
        extname = path.extname(entry);  //
        basename = path.basename(entry, extname);  //  "/" path,entryextname 
        pathname = path.join(dirname, basename);    // path
        pathname = pathDir ? pathname.replace(new RegExp("^" + pathDir), "") : pathname;
        entries[pathname] =  basename;
    }
    return entries;
}

I want to know how to package several scss files into the build directory