Dokku + Hetzner + CloudFlare here. It's just so simple. I love it.

I have noticed that deploys eat HDD for breakfast. Prune often. ("docker system df" helps show stats on space usage).

I have also read many optimisation guides talking about Alpine Linux images, but not sure whether that makes a difference.

Running a Go stack. Often wondering whether Caddy could be an alternative?

Sometimes I feel like this is still "too much". Like I still don't have enough control over the stack. Cloudflare introduces a lot of magic. I am not sure I fully grasp Dokku, but it works. Oh well!