Minor improvement to the saving of a hosted file. Guessing the content type based on the extension.

app/methods/hosted_file_methods.py

@@ -1,4 +1,4 @@
-import datetime, hashlib, os, pathlib, shutil, time
+import datetime, hashlib, mimetypes, os, pathlib, shutil, time
 
 from fastapi import File, UploadFile
 from typing import Dict, List, Optional, Set, Union
@@ -441,8 +441,7 @@ async def save_file_to_hosted_file(
 
     # There is a difference between Content-Type and MIME type.
     # https://stackoverflow.com/questions/3452381/whats-the-difference-of-contenttype-and-mimetype
-    # file_info['content_type'] = file.content_type # might also include charset or other parameters
-    # file_info['mimetype'] = file.mimetype # This may need to be filled in a different way?
+    file_info['content_type'] = mimetypes.guess_type(filename)[0]
 
     file_obj.seek(0, os.SEEK_END)
     file_size = file_obj.tell()