Reactjs React CRA构建时间变量问题-多条目解决方案

我正在尝试使用react和CreateReact应用程序，根据使用动态导入的环境变量选择构建目标。以下是我试图实现的目标：

const BUILD_TARGETS : ITarget[] = [
  {
    name: "app",
    path: "./modules/app/Index",
  },
  {
    name: "admin",
    path: "./modules/admin/Index",
  },
];


// Determine which entry point to import
const target = BUILD_TARGETS.find(c=>process.env.REACT_APP_BUILD_TARGET === c.name) as ITarget;

//Import the entry point and render it's default export
import(`${target.path}`).then(({ default: BuildTarget }) =>
  ReactDOM.render(
   
    <>
    <BuildTarget />
  
    </>
      ,
    document.getElementById("root")
  )
);

build.ps1

$module=$args[0]
$script=$args[1]
Copy-Item $module -Destination "src/index.tsx"
npm run-script $script

"build-app": "@powershell -NoProfile -ExecutionPolicy Unrestricted -Command ./build.ps1 src\\app.index.tsx build",
"build-admin": "@powershell -NoProfile -ExecutionPolicy Unrestricted -Command ./build.ps1 src\\admin.index.tsx build",
"start-app": "@powershell -NoProfile -ExecutionPolicy Unrestricted -Command ./build.ps1 src\\app.index.tsx start",
"start-admin": "@powershell -NoProfile -ExecutionPolicy Unrestricted -Command ./build.ps1 src\\admin.index.tsx start"

$module=$args[0]
$script=$args[1]
Copy-Item $module -Destination "src/index.tsx"
npm run-script $script