slightly unsure of what you are thinking about. To update plex and others, it is simply just restart them (turn off then back on again). That is how they are built. Or you can use the update function on some images, read on the hub.docker on how the update is suggested. If it says restart to autoupdate, that is how the update is performed. Plex is that way. Sonarr has a autoupdate built in which works