Just as an example, Gitlab is (was?)kind of infamous about this - everything you do in gitlab for a long time was already in docker, so you by nature of running in gitlab were forced to do everything in DinD mode. They might have changed this in recent times.
I think as long as you can expose the docker socket (should also be possible in gitlab) you can use dood. Dind has never worked out for me. Sooner or later there will be issues.
