Have you used Dokku before, or did you look at it before settling on CapRover? (I'm just starting to look at both)
I think CapRover has the best experience out of the Dokku/Flynn/CapRover "group". Not a huge Dokku fan. Would use Flynn over Dokku again, but I'd rather use CapRover over both.
If you're intent on using Dokku, there's a useful web console:
CloudRon [1] is actually really great, but its pricing is prohibitive (and changes frequently) for side-projects, which is when I most want to use something like this rather than just deploying/managing the k8a myself.
[1]: https://cloudron.io/