I am able to create a flexi app engine version with custom service account. So basically in app.yaml file if I pass something like this
runtime: custom
env: flex
service: test
service_account: "somecustomserviceaccount"
I am able to create the app engine service version and it works fine. I need to automate and do the same via terraform but in the documentation of terraform resource "google_app_engine_flexible_app_version" I could not find a similar agrument.
Please let me know if this is feasible and if not what is the alternate to do it via terraform