So I can't tell from this if you need a RHEL subscription or not to use the docker images? I guess the most salient question will be can the images yum install

So I can't tell from this if you need a RHEL subscription or not to use the docker images? I guess the most salient question will be can the images yum install things or not? I'm guessing they will have that functionality without requiring a subscription but that's just speculation based on my reading of that blurb.