fix middleware

Author: Kurtyjlee

peerprep-fe/src/middleware.ts

@@ -1,7 +1,8 @@
 import { NextResponse } from 'next/server';
 import type { NextRequest } from 'next/server';
 
-const baseURL = process.env.AUTH_SERVICE_URL || 'http://172.17.0.1:3001/api/v1';
+const baseURL =
+  process.env.NEXT_PUBLIC_AUTH_SERVICE_URL || 'http://172.17.0.1:3001/api/v1';
 
 // This function can be marked `async` if using `await` inside
 export async function middleware(request: NextRequest) {