I would really like to see an open source IDP that can be run as a Lambda or similar for small scale employee OAuth, etc. without a permanent VM footprint. I’d

I would really like to see an open source IDP that can be run as a Lambda or similar for small scale employee OAuth, etc. without a permanent VM footprint. I’d write one, of course, but I’d be nervous about doing security critical code as a hobby. Do any exist?