I don't think it's a trivial thing to do outside of work. At most you can play with kubernetes and cloud but in an interview the lack of experience will come out because I think some stuff can only be learned at work. Especially scalability.
> but in an interview the lack of experience will come out
Some people are just up front about it - I've read a lot, and practiced the best I can, but am looking for some real world experience to marry that too.