Merge pull request #7929 from owncloud/ubernauten-fixes

[DOCS-ONLY] certificates and updates with supervisorctl

docs/ocis/deployment/ubernauten.md

@@ -98,6 +98,7 @@ ocis                             RUNNING   pid 9813, uptime 0:01:40
 No config updates to processes
 [owncloud@ocis ~]$ supervisorctl update
 ```
+Every Uberspace comes with its own HTTPS certificate via Letsencrypt. See the [Uberspace - HTTPS](https://manual.uberspace.de/web-https/) documentation for more details.
 
 ### Updating ownCloud Infinite Scale
 
@@ -107,6 +108,8 @@ Make a backup of your data and make sure you have read and understood the releas
 
 Don't worry, you can always go back to the older version you had installed, there's a long list of older versions available for download.
 
+Mind that if you want to re-configure, re-install or start a new version of ocis, make sure you have stopped supervisorctl from restarting ocis. Enter `supervisorctl stop ocis`, followed by a `killall -9 ocis` to make sure no ocis version is still running.
+
 ### Wiping and Clean Restart from Scratch
 
 This little script is removing your ocis installation (and **all of your data!**), replacing it with a new, clean ocis installation. Be careful and only use it for testing purposes. Specify your desired ocis version in the curl command.