Also provide the original file name to the post consumption script

src/documents/consumer.py

@@ -203,6 +203,7 @@ class Consumer(LoggingMixin):
         script_env["DOCUMENT_TAGS"] = str(
             ",".join(document.tags.all().values_list("name", flat=True)),
         )
+        script_env["DOCUMENT_ORIGINAL_FILENAME"] = str(document.original_filename)
 
         try:
             Popen(