How to deploy react router v7 framework mode with Nginx?

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I have created an app with npx create-react-router@latest my-react-router-app, which creates project with react router v7 framework mode, after executing npm run build, this folder structure is generated:

├─build
│  ├─client
│  │  └─assets
│  └─server

There is no "index.html" file, how can I deploy those files with Nginx?

So I'd like to ask:

Is react router v7 framework mode a joke?

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Damn, you guys enable SSR by default?