Description

Reading both the README.md and testgroung doc, it states that at the current time there are two builders available:

Testground does not care what the test plan actually does, the language it's written in, nor the runtime it targets. As long as the source code is accessible, and a builder exists to compile that code into a runnable artefact, such as an executable or a Docker image, you're good to go 🚀
At the time of writing, Testground offers two builders:
exec:go compiles a Go test plan into a platform executable using the system Go installation.
docker:go compiles a Go test plan into a Docker image.´

but looking at the test-plans it now seems docker:generic is also offered now.

What defines this endeavour to be complete?

Documentation referring the docker:generic builder and its purpose on these cases