docs(storage/oci): added new OCI authentication configuration propert…

…y type (#201)

configuration/overview.mdx

@@ -268,6 +268,7 @@ export FLIPT_CORS_ALLOWED_ORIGINS="http://localhost:3000 http://localhost:3001"
 | storage.oci.bundles_directory       | The directory in which to store local bundles         | $config/flipt/bundles | v1.31.0 |
 | storage.oci.poll_interval           | The interval to poll the registry for changes         | 30s                   | v1.31.0 |
 | storage.oci.manifest_verison        | The OCI manifest version to use                       | 1.1                   | v1.39.1 |
+| storage.oci.authentication.type     | The type to use for authentication                    | static                | v1.40.0 |
 
 ### Cache
 

configuration/storage.mdx

@@ -496,14 +496,25 @@ Flipt has its own custom OCI manifest format (we call them `bundles`), which can
 </Tabs>
 
 <Note>
-  Certain OCI registries may require setting the OCI manifest version to something other than the default (`1.1`) to work correctly. 
-  
+  Certain OCI registries may require setting the OCI manifest version to something other than the default (`1.1`) to work correctly.
+
   In this case, you can set the `FLIPT_STORAGE_OCI_MANIFEST_VERSION` environment variable or `storage.oci.manifest_version` configuration property to the desired version (e.g. `1.0`).
 
 See [this issue](https://github.com/flipt-io/flipt/issues/2907) for more information.
 
 </Note>
 
+#### Authentication
+
+Starting from version `1.40.0`, Flipt offers two authentication methods:
+
+- **Static**: This is the default method that uses a username and password for authentication.
+- **AWS ECR**: If you're using Flipt on AWS with a private ECR repository, you can configure authentication differently.
+  Set either the `FLIPT_STORAGE_OCI_AUTHENTICATION_TYPE` environment variable or the `storage.oci.authentication.type` configuration property to `aws-ecr`.
+  Additionally, make sure your compute instance or container has a role with permissions to pull from ECR.
+
+See [this issue](https://github.com/flipt-io/flipt/issues/2938) for more information.
+
 ### Flag State Configuration
 
 Each of Flipt's filesystem backends expects you to represent your feature flag configuration via a set of YAML files.