I haven't used it it, but the new (like, really new) Iron Functions may be what ...

kaishiro on Nov 21, 2016 | parent | context | favorite | on: New for AWS Lambda – Environment Variables and Ser...

I haven't used it it, but the new (like, really new) Iron Functions may be what you're looking for. I've only used the Workers/Cache so far, but they're dockerized so pretty much language agnostic.

I'm making an assumption that Functions is similar.