https://help.nextcloud.com/t/howto-ubuntu-docker-nextcloud-talk-collabora/76430
Follow the guide above as close as possible and deviate where traefik is being used etc.

There is also somewhere a step to set up an alias for `occ` that can be used outside the container to directly execute occ cli commands inside the container. (Should be in the guide above)

Set default_phone_region like this:
occ config:syste:set default_phone_region --value="DE"

Check if you have to alter this line in the _collabora/loolwsd.xml_ file:

`<host desc="Regex pattern of hostname to allow or deny." allow="true">nextcloud\\.sporada\\.eu</host>`

Look at the documentation for server security and server tuning: https://docs.nextcloud.com/server/21/admin_manual/installation/index.html#

Phot viewer tweaks: https://rayagainstthemachine.net/linux%20administration/nextcloud-photos/