Thanks for the reply 
If I understood it correctly, the backup/restore option would also include a dump of the whole database, right?
If that’s the case, I’d be backing up a rather big DB (2m posts and 300k users), then restoring it on itself (as both instances currently use the same RDS). That’s a overhead that I’d like to avoid if I could.
Oh. /uploads inside that directory seems to be exactly what I’m looking for. As far as I understood these folders’ content will be mounted inside my docker, right? Then that should even work for logo and favicon images as well, I guess.
That’s really good! I’ll check if it works.