How to run app in nginx as reverse proxy with prefix

[dracorp]

BorgWarehouse version :3.1.1
Installation type :

• Docker
• Baremetal (RHEL9)
• Other environment :

---

Describe your problem here.

I have configured borgwarehouse with nginx as reverse proxy and it works. But how to configure app to run in prefix mode? For example: https://domain.tld/backup
I tried this configuration:

import type { NextConfig } from 'next';

const nextConfig: NextConfig = {
  basePath: '/backup',
  assetPrefix: '/backup/',
  images: {
    unoptimized: true,
  },
  reactStrictMode: false,
  async redirects() {
    return [
      {
        source: '/setup-wizard',
        destination: '/setup-wizard/1',
        permanent: true,
      },
      {
        source: '/manage-repo',
        destination: '/',
        permanent: true,
      },
    ];
  },
};

export default nextConfig;

but it works partially.