gitlab

Hi everyone

I have read through the documentation now several times, and I just want to soundboard something with someone. Regarding the environments we can set up. Is this meant for example as a production cluster and a dev cluster? And if so, is it possible to put a docker swarm cluster in there? I don't see how gitlab will 'know' how to deploy an application to docker swarm? What am I missing? Or am I better off just deploying "manually" via the CI/CD pipeline like I am doing now?

TIA