In my case, I use Rancher (and Kubernetes) in order to deploy my services. Discourse, while using Docker containers, don't have any documentation on how to deploy Discourse outside of their own installer script.
Thus, I am considering Flarum as a Discourse replacement. But with the beta 8 milestone at 86%, and some major breaking change coming, I don't know if I should wait for beta 8, or install beta 7 first (and, maybe, stick to the officials addons for now).