Changed to workdir variable

app/main.py

@@ -1,8 +1,9 @@
 #!/usr/bin/env python3
 
-from fastapi import FastAPI, HTTPException
-from .tasks.upload_to_s3 import upload_to_s3
 import os
+from fastapi import FastAPI, HTTPException
+from app.config import settings
+from app.tasks.upload_to_s3 import upload_to_s3
 
 app = FastAPI(title="Document Processing API")
 
@@ -17,9 +18,12 @@ def process(file_path: str):
     This enqueues the first task (upload_to_s3), which handles the full pipeline.
     """
 
+    # If file_path is not absolute, treat it as relative to settings.workdir.
+    if not os.path.isabs(file_path):
+        file_path = os.path.join(settings.workdir, file_path)
+
     if not os.path.exists(file_path):
         raise HTTPException(status_code=400, detail=f"File {file_path} not found.")
 
     task = upload_to_s3.delay(file_path)
     return {"task_id": task.id, "status": "queued"}
-