also if find your having issues with torrents not downloading it could be a dns issue. look in the log and if it says unable to resolve hostname or something like that change your line to read
-e 'NAME_SERVERS'='1.0.0.1,209.222.18.222,84.200.69.80,37.235.1.174,1.1.1.1,209.222.18.218,37.235.1.177,84.200.70.40'
i was having issues and made that change and hav not had an issue since.