[darren0]

This exact use case is built into acorn. In the getting starting guide redis/postgres are included in the acorn, but in production those services can easily be overwritten with any k8s service and the embedded containers will not be ran. This is referred to as linking: https://docs.acorn.io/running/linking-acorns The docs only refer to linking acorns but the exact same thing works with linking a k8s service to an acorn.

Disclosure: acorn creator.