Well it depends on your audience, in my case it is sufficient but I agree if one really wants to learn this just makes you ask questions about horrible overkill

Well it depends on your audience, in my case it is sufficient but I agree if one really wants to learn this just makes you ask questions about horrible overkill, and then you have to explain layers and indeed, it is a rabbit hole, I agree. Still, you understand it ones you can build on that. But tbh I agree that there are now students that lack basic sysadmin skills needed to understand docker images from the inside. That said, I don't understand Kubernetes very deeply, so we complement each other nicely.