Nextcloud version: 25.0.6 docker installation
The issue you are facing:
I add changes in .htaccess AFTER the line
‘#### DO NOT CHANGE ANYTHING ABOVE THIS LINE ####’
the I run occ maintenance:update:htaccess
Result:
changes are gone
How can I make the changes permanent?
This doesn’t mean that the changes below this line are going to be persistent. It simply means: DO NOT CHANGE ANYTHING ABOVE THIS LINE!
Afaik you cannot. Keep your changes somwhere in your documentation, and paste them back in after an upgrade.
https://github.com/nextcloud/server/issues/19254
Addition:
Editing the .htaccess file is often used as a workaround in order to make changes on shared hosting platforms where you don’t have access to the Apache and / or PHP config files. However, since you are using Docker there are probably better ways to apply your configuration changes, instead of adding them to the .htaccess file…