Nextcloud update / Upgrade to newest version

To update Nextcloud when automatic updating is disabled in the config.php file from a local machine , you need to use the command line updater (occ upgrade). Here are the steps: 
 
 Open a terminal and navigate to the Nextcloud root directory. 
 Run the following command to start the command line updater: 
 
 sudo -u www-data php occ upgrade 
 
 To run the occ upgrade command from outside the Nextcloud Docker container named "nextcloud", you can use the docker exec command like this: 
 sudo docker exec --user www-data nextcloud php occ upgrade 
 Here's a breakdown of the command: 
 
 sudo docker exec  - This allows you to run a command inside a running Docker container. 
 --user www-data  - This specifies that the command should be run as the  www-data  user, which is the recommended user for running Nextcloud commands. 
 nextcloud  - This is the name of your Nextcloud container. 
 php occ upgrade  - This is the actual command to upgrade Nextcloud using the  occ  command-line tool. 
 
 So, the full command  sudo docker exec --user www-data nextcloud php occ upgrade  will execute the  php occ upgrade  command inside the "nextcloud" container as the  www-data  user, which is the recommended way to perform the Nextcloud upgrade.