You should be able to run a flask app pretty easily in kube. Basically you would build a docker image containing the app then deploy it with k8 I believe
If they have the drive to create an entire SAAS app, how is following a a few tutorials on deploying it to a container in k8 too difficult? It only takes 20-30 minutes to setup and there are hundreds of videos and step by step walk through a that hold their hand through it start to finish. Maybe I am over estimating how difficult it is to build an app in Flask then.
Building, deploying and getting something that works fine isn't that complicated, but in my experience, without a strong background of the tech (the 100s of hours required), you will lose a significant amount of time, compounded by a high amount of stress and probably money / customer dissatisfaction, when a problem arises (even a trivial one), and that always happen.
