Amazon Bedrock AgentCore Samples - [Content Improvement - AWS IAM Permission]

**Describe the improvement request**
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Clear explanation of the required permissions in IAM is important. When I executed the following scripts,

launch_result = agentcore_runtime.launch()
launch_result

I was getting a different error message. After a long time troubleshooting, I realized that the addition of ENV PYTHONIOENCODING=utf8 in the Dockerfile resolved the issue (thanks to Mallik Panchumarthy for the help on this).

However, after updating the Dockerfile, I still faced an issue and realized I didn't have the proper permissions to access Bedrock-Agentcore.
If the required permissions were clearly mentioned in the tutorial, it would have helped for the smooth execution of the tutorial.

Locate the tutorial that runs `launch_result = agentcore_runtime.launch()` and its Dockerfile, then review how the required Bedrock AgentCore IAM permissions are documented. Done means the tutorial clearly lists the permissions needed to execute the scripts and addresses the reported access problem, including the noted `PYTHONIOENCODING=utf8` workaround.

Written by the indexing model from the issue text.