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+# Nextcloud setup
 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)
 
+#Nextcloud self check fixes
 Set default_phone_region like this:
 occ config:syste:set default_phone_region --value="DE"
 
+# Collabora loolwsd setup
 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>`
 
+# Server Security and tuning
 Look at the documentation for server security and server tuning: https://docs.nextcloud.com/server/21/admin_manual/installation/index.html#
+Do as much as is possible with the docker setup. The PHP stuff for example is not needed.
 
-Phot viewer tweaks: https://rayagainstthemachine.net/linux%20administration/nextcloud-photos/
+
+# Photo Preview Generation:
+- Photo viewer tweaks: https://rayagainstthemachine.net/linux%20administration/nextcloud-photos/
+- Use these values to svae space on prieview files and speed nextcloud up. https://ownyourbits.com/2019/06/29/understanding-and-improving-nextcloud-previews/
 - I created a cron Job outside the container using the `occ` client command to trigger photo pre generation every day.
 - Maybe this can be added to the cron nextcloud container?
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