The idea is a common pattern among Dagger users, but you can do the same with bash scripts, python, or any entrypoint. It's more of a CI ethos, and for me Dagger is an implementation detail.

I personally hold Dagger a bit different from most, by writing a custom CLI and using the Dagger Go SDK directly. This allows you to do more host level commands, as everything in a Dagger session runs in a container (builds and arbitrary commands).

I've adopted the mono/megarepo organization and have a pattern that also includes CUE in the solution. Starting to write that up here: https://verdverm.com/topics/dev/dx