chage location to store image

main.py

@@ -1,4 +1,5 @@
 import cv2
+import os
 import numpy as np
 from pyzbar.pyzbar import decode
 from fastapi import FastAPI, File, UploadFile
@@ -93,8 +94,10 @@ app = FastAPI()
 
 @app.post("/")
 async def upload_image(image: UploadFile = File(...)):
+    temp_file_path = os.path.join('/tmp', image.filename)
+
     # 画像ファイルの内容を保存または処理する
-    with open(image.filename, "wb") as buffer:
+    with open(temp_file_path, "wb") as buffer:
         shutil.copyfileobj(image.file, buffer)
     result = qrdec(image.filename)
     logger.info(f"response : {result}")