fix: upload_manifest request by removing Content-Length header (#190)

the upload_manifest function incorrectly set the Content-Length header
field which is not mentioned by the distribution specification

Signed-off-by: Robin Bergewski <robinbergewski@gmail.com>

Author: vsoch

CHANGELOG.md

@@ -14,6 +14,7 @@ and **Merged pull requests**. Critical items to know are:
 The versions coincide with releases on pip. Only major versions will be released as tags on Github.
 
 ## [0.0.x](https://github.com/oras-project/oras-py/tree/main) (0.0.x)
+ - don't include Content-Length header in upload_manifest (0.2.29)
  - propagate the tls_verify parameter to auth backends (0.2.28)
  - don't add an Authorization header is there is no token (0.2.27), closes issue [182](https://github.com/oras-project/oras-py/issues/182)
  - check for blob existence before uploading (0.2.26)

oras/provider.py

@@ -704,7 +704,6 @@ def upload_manifest(
         jsonschema.validate(manifest, schema=oras.schemas.manifest)
         headers = {
             "Content-Type": oras.defaults.default_manifest_media_type,
-            "Content-Length": str(len(manifest)),
         }
         return self.do_request(
             f"{self.prefix}://{container.manifest_url()}",  # noqa

oras/version.py

@@ -2,7 +2,7 @@
 __copyright__ = "Copyright The ORAS Authors."
 __license__ = "Apache-2.0"
 
-__version__ = "0.2.28"
+__version__ = "0.2.29"
 AUTHOR = "Vanessa Sochat"
 EMAIL = "vsoch@users.noreply.github.com"
 NAME = "oras"