immich/server/src/app.controller.ts

import { Controller, Get, Res, Headers } from '@nestjs/common';
import { Response } from 'express';

@Controller()

export class AppController {
  constructor() { }

  @Get()
  async redirectToWebpage(@Res({ passthrough: true }) res: Response, @Headers() headers) {
    const host = headers.host;

    return res.redirect(`http://${host}:2285`)
  }
}