Fix Upload data annotation from CVAT to Azure Blob storage (#5596)

Fix issue #5149

CHANGELOG.md

@@ -43,6 +43,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Helm: Empty password for Redis (<https://github.com/opencv/cvat/pull/5520>)
 - Fixed HRNet serverless function runtime error on images with alpha channel (<https://github.com/opencv/cvat/pull/5570>)
 - Preview & chunk cache settings are ignored (<https://github.com/opencv/cvat/pull/5569>)
+- Export annotations to Azure container (<https://github.com/opencv/cvat/pull/5596>)
 
 ### Security
 - Fixed vulnerability with social authentication (<https://github.com/opencv/cvat/pull/5521>)

cvat/apps/engine/cloud_provider.py

@@ -1,4 +1,4 @@
-# Copyright (C) 2021-2022 Intel Corporation
+# Copyright (C) 2021-2023 Intel Corporation
 #
 # SPDX-License-Identifier: MIT
 
@@ -455,8 +455,8 @@ class AzureBlobContainer(_CloudStorage):
     def upload_file(self, file_path, file_name=None):
         if not file_name:
             file_name = os.path.basename(file_path)
-        with open(file_path, 'r') as f:
-            self.upload_fileobj(f, file_name)
+        with open(file_path, 'rb') as f:
+            self.upload_fileobj(f.read(), file_name)
 
     # TODO:
     # def multipart_upload(self, file_obj):