I’d recommend Docker / virtual machines as its own top-level module. There’s essentially no better way than containers to make projects portable and reproducible, and containers are now essential for pretty much any production system. I’ve taught docker to a few dozen people and while they hate it at first (the learning curve can be steep) they love it in the end.

Also wish this course covered bazel, maybe in potpourri. Make is important and bazel isn’t standard but bazel is pretty important for large C++ projects.

Docker and bazel both have fairly complicated interfaces and the time set aside for a course like this is the perfect time to play with them.