kubernetes can you install an entire OS in a pod? And perform selenium tests

So i'm trying to find a good way of testing the Safari web browser. I've been looking at kubernetes which seems like a good fit for most browser testing for browsers such as Chrome or Firefox with Selenoid or Moon. Safari is a different beast however. It seems like you need to install the entire OS just to test the browser. So what would be a good solution to this? Should i even bother with a cluster?