Link to Download Red Hat RHEL ISO:

https://access.redhat.com/downloads/content/479/ver=/rhel—10/10.0/x86_64/product-software

Red Hat Dev Subscription

I don’t think you need this for our test since it preboot, but for reference rhel images require registration to enable the repos for packages.

You login, list the available subscriptions then attach the pool id.

It’s the 3 commands shown here.

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/system_administrators_guide/chap-subscription_and_support-registering_a_system_and_managing_subscriptions