update: optimize environment

backend/src/backend/main.py

@@ -134,6 +134,7 @@ async def verify_jupyter_access(
 
     target_port = ws_info.get("port")
     jupyter_token = ws_info.get("token")
+    jupyter_base_url = ws_info.get("base_url")
 
     if not target_port:
         raise HTTPException(
@@ -141,6 +142,6 @@ async def verify_jupyter_access(
         )
 
     # 通过 Response Header 返回 Upstream 地址与 Token 给 Nginx
-    response.headers["x-upstream-addr"] = f"http://192.168.139.3:{target_port}"
+    response.headers["x-upstream-addr"] = f"{jupyter_base_url}:{target_port}"
     response.headers["x-jupyter-internal-token"] = jupyter_token or ""
     return {"status": "ok"}