vue 这样配置打包命令对吗？

根目录下新建的 .env文件里面内容如下：

NODE_ENV = 'test'
VUE_APP_BASE_URL = 'https://xxx.com.cn'

package.json文件内容配置打包命令如下：

{
  "name": "imos-front-end",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "start": "npm run serve",
    "build": "cross-env vue-cli-service build admin",
    "build:test": "vue-cli-service build --mode test",
    "build:master": "vue-cli-service build --mode master",
    "build:pre": "vue-cli-service build --mode pre",
    "build:train": "vue-cli-service build --mode train",
    "lint": "eslint 'src/**/*.{js,vue}' --fix && stylelint 'src/**/*.{css,less}' --fix",
    "deploy:jdcloud": "sh ./deploy.sh"
  },
....

vue.config.js配置

const projectName = process.argv[3];
// const targetArg = process.argv[4];
const path = require('path');
const fs = require('fs');

// let target = null;

// if (targetArg) {
//   // eslint-disable-next-line no-unused-vars
//   target = targetArg.trim().replace('--targetEnv=', '').trim();
// }

function getPages() {
  if (process.env.NODE_ENV === 'production') {
    return {
      index: {
        // page 的入口
        entry: `src/modules/${projectName}/index.js`,
        // 模板来源
        template: 'public/template.html',
        title: projectName,
      },
    };
  } else {
    const rootPath = './src/modules';
    const files = fs.readdirSync(path.resolve(__dirname, rootPath));
    const pages = {};
    files.forEach((item) => {
      pages[item] = {
        entry: `${rootPath}/${item}/index.js`,
        template: 'public/template.html',
      };
    });
    return pages;
  }
}

module.exports = {
  pages: getPages(),
  publicPath: process.env.NODE_ENV === 'production' ? `/${projectName}/` : '/',
  outputDir: 'dist/' + projectName,
  productionSourceMap: false,
  devServer: {
    host: 'admin.cloud.com',
    disableHostCheck: true,
    proxy: {
      '/api': {
        target: 'https://cloud.com/api', // target表示代理的服务器url
        // target: 'http://mock.fmgt.com/mock/6267ae6b1627a00967237d49/', // target表示代理的服务器url
        changeOrigin: true,
        pathRewrite: {
          // pathRewrite表示路径重写，key表示一个正则，value表示别名
          '^/api': '', // 即用 '/api'表示'http://localhost:3000/api'
        },
      },
      [process.env.VUE_APP_BASE_URL]: {
        target: process.env.VUE_APP_MOCK_URL,
        changeOrigin: true,
        pathRewrite: {
          [`^${process.env.VUE_APP_BASE_URL}`]: '',
        },
      },
    },
    historyApiFallback: {
      rewrites: [
        { from: /admin/, to: '/admin.html' },
        { from: /login/, to: '/login.html' },
        { from: /./, to: '/portal.html' },
      ],
    },
  },
  chainWebpack: (config) => {
    config.module
      .rule('md')
      .test(/\.md$/)
      .use('html-loader')
      .loader('html-loader')
      .end()
      .use('markdown-loader')
      .loader('markdown-loader')
      .end();
    // config.plugin('define').tap((args) => {
    //   args[0]['process'] = { ...args[0]['process.env'] };
    //   return args;
    // });
  },
  pluginOptions: {
    'style-resources-loader': {
      preProcessor: 'less',
      patterns: [path.resolve(__dirname, './src/assets/global.less')],
    },
  },
  css: {
    loaderOptions: {
      less: {
        // 这里的选项会传递给 css-loader
        lessOptions: {
          javascriptEnabled: true,
        },
      },
    },
  },
};

运行命令打包后：在dist文件查看文件名为啥是 --mode 呢？这样配置的打包命令方式对吗？求大佬指点。