docs: v1.33.0 blog run local --use-task-role flag (#5596)

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site/content/blogs/release-v133.en.md

@@ -33,6 +33,11 @@ Copilot v1.33 brings big enhancements to help you develop more flexibly and effi
 
 ## Use ECS Task Role for `copilot run local`
 
+`copilot run local` now has a flag `--use-task-role` which is enabled by default. When enabled, Copilot will retrieve the IAM permissions from your deployed service and inject them into the containers created by `run local`.
+This means that your containers will have the same permissions that they do on the cloud, enabling you to test more accurately.
+
+If you don't want to use the `TaskRole` permissions, or if Copilot fails to retrieve them, you can disable this feature by setting `--use-task-role=false`.
+
 ## Container dependencies support for `copilot run local`
 
 `copilot run local` now respects the [`depends_on`](../docs/manifest/lb-web-service.md#image-depends-on) specified in the service manifest.
@@ -58,4 +63,4 @@ startup:
     essential: false
 ```
 
-This means that your main container will start only after nginx sidecar container has started and nginx will start only after startup container is completed successfully.
+This means that your main container will start only after nginx sidecar container has started and nginx will start only after startup container is completed successfully.