These are some helpful packages you may want to install in the OpenSearch containers. We purposefully don't install them for you so that we don't have to ship and maintain a custom package for this class.
To begin, you'll need to attach to the running OpenSearch instance as root:
docker exec -it --user root opensearch-node1 /bin/bash
Now install the appropriate packages that you see fit. Some that we did:
yum install procps less