怎么解决子应用Rsbuild preview跨域？

[Yee1014]

主应用

Garfish.run({
    basename: '/sub',
    domGetter: '#micro-app-sub',
    apps: [
      {
           name: 'sub1',
           activeWhen: '/rsbuild',
           entry: 'http://localhost:5174',
           cache: true,
      }
    ]
})

子应用rsbuild配置

export default defineConfig({
  plugins: [
    pluginVue2(), 
    pluginLess({
      lessLoaderOptions: { 
        lessOptions: {javascriptEnabled: true}, 
        implementation: require('less'),
        additionalData: `@import "/src/style/vars.less";`
      }
    })
  ],
  output: {
    assetPrefix: 'http://localhost:5174',
  },
  server: {
    cors: true,
    port: 5174,
  },
});

npm run dev可以正常获取，npm run preview提示 fetch 跨域 cors