working containerized build

main.py

@@ -1,4 +1,5 @@
 import asyncio
+import os
 from datetime import datetime
 from typing import Optional, Union
 from loguru import logger
@@ -14,7 +15,8 @@ async def main():
     month = now.strftime('%B').lower()[0:3]
     day = str(now.day).zfill(2)
     url = f"https://www.theguardian.com/us-news/{year}/{month}/{day}/all"
-    output_file = "data/output.json"
+    data_dir = os.environ.get("DATA_DIR", "data")
+    output_file = os.path.join(data_dir, "output.json")
 
     client = GuardianClient(concurrency_limit=5)
     parser = GuardianParser()