Concourse server for private projects - where?


I need CI for my open source project and private closed projects.

Where do you host concourse for you private projects? Do you use the same server for CI/CD and production environment? For example in kubernetes cluster?

CI/CD in kubernetes cluster which is production environment sounds like a bad idea. But paying for +1 server only for CI/CD also sounds bad. I don’t know how to solve it to not spent too much money for my private needs. Where do you host concourse for your private needs?