Offsite backup configuration

Setup offsite backups for the discourse forum.
@infra

If somebody has any ideas or experience about how to properly manage offsite backups, please share.

@infra
Meeting place: https://meet.flossk.org/b/flo-qqg-w9e

Here are some instructions for setting up server backup:

If someone would like to keep a server backup, please let us know and we can send you a backup key.