Changelog, copyright headers, documentation

Author: rasmusfaber

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)
+ - Add support for authentication with ECR registries
  - fix 'get_manifest()' method with adding 'load_configs()' calling (0.2.33)
  - fix 'Provider' method signature to allow custom CA-Bundles (0.2.32)
  - initialize headers variable in do_request (0.2.31)

docs/getting_started/user-guide.md

@@ -678,17 +678,13 @@ More verbose output should appear.
 
 > I get unauthorized when trying to login to an Amazon ECR Registry
 
-Note that for [Amazon ECR](https://docs.aws.amazon.com/AmazonECR/latest/userguide/registry_auth.html)
-you might need to login per the instructions at the link provided. If you look at your `~/.docker/config.json` and see
-that there is a "credsStore" section that is populated, you might also need to comment this out
-while using oras-py. Oras-py currently doesn't support reading external credential stores, so you will
-need to comment it out, login again, and then try your request. To sanity check that you've done
-this correctly, you should see an "auth" key under a hostname under "auths" in this file with a base64
-encoded string (this is actually your username and password!) An empty dictionary there indicates that you
-are using a helper. Finally, it would be cool if we supported these external stores! If you
-want to contribute this or help think about how to do it, @vsoch would be happy to help.
-
+You can use the ECR auth backend by setting the `auth_backend` to `ecr`:
 
+```python
+import oras.client
+client = oras.client.OrasClient(auth_backend="ecr")
+client.pull(target="123456789012.dkr.ecr.us-east-1.amazonaws.com/my-repo:latest")   
+```
 
 ## Custom Clients
 

oras/auth/ecr.py

@@ -1,3 +1,7 @@
+__author__ = "Vanessa Sochat"
+__copyright__ = "Copyright The ORAS Authors."
+__license__ = "Apache-2.0"
+
 import re
 
 import boto3