Middleware error on cluster deployment with Docker.

import { betterFetch } from "@better-fetch/fetch";
import { NextResponse, type NextRequest } from "next/server";


export default async function middleware(request: NextRequest) {
  console.log("Origin url:",  request.nextUrl.origin)
  const { data: session } = await betterFetch<any>("/api/auth/get-session", {
    baseURL: process.env.request.nextUrl.origin,
    headers: {
      cookie: request.headers.get("cookie") || "",
    },
  });
  if (!session) {
    return NextResponse.redirect(
      new URL("/auth/login", request.nextUrl.origin),
    );
  }
  if (session.user.role === "admin" && request.nextUrl.pathname === "/") {
    return NextResponse.redirect(new URL("/admin", request.nextUrl.origin));
  }
  if (request.nextUrl.pathname.startsWith("/admin")) {
    const isAdmin = session.user?.role === "admin";
    if (!isAdmin) {
      return NextResponse.redirect(new URL("/", request.nextUrl.origin));
    }
  }
  return NextResponse.next();
}

export const config = {
  matcher: [
    "/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt|auth/login|auth/register|auth/reset-password|images|impressum|datenschutz|agb).*)",
  ],
};
//