angular.json 配置 ng build 输出路径，修改默认dist路径为dist/src不生效?

Question

angular.json build节点配置

"build": {

      "builder": "@angular-devkit/build-angular:browser",
      "options": {
        "outputPath": "dist/src",
        "tsConfig": "./src/tsconfig.json",
        "index": "demo/src/index.html",
        "main": "demo/src/main.ts",
        "polyfills": "demo/src/polyfills.ts",
        "assets": [
          "src/assets",
          "src/favicon.ico"]
          }
          }

我将"outputPath"由 "dist"改成了"dist/src"
但是我生成的文件还是在dist下面 并没有生成dist/src 目录
请问是我的配置哪里有问题吗？
谢谢解答~