Adds auto-update to containers, enables auto-update for root, sync only at 8 and 20, excludes some files from sync

quadlets/nextcloud/nextcloud.container

@@ -17,6 +17,7 @@ Environment=REDIS_HOST=nextcloud-redis
 Environment=TRUSTED_PROXIES=192.168.0.0/16 172.16.0.0/12 169.254.0.0/16 10.0.0.0/8
 Environment=TZ=Europe/Zurich
 Image=docker.io/nextcloud:32
+Label=io.containers.autoupdate=registry
 Pod=nextcloud.pod
 Secret=database-user,type=env,target=MYSQL_USER
 Secret=database-password,type=env,target=MYSQL_PASSWORD