when inspecting the crontab on web03 we noticed that docker-compose exec -t might not work correctly and changed the flag to -T.
This change caused a different output that suggested that the correct rake script is getting executed now.

The new crontab entry:

#Ansible: Purge old notices in errbit
0 7 * * * cd /local/sites/errbit; docker-compose exec -T errbit bundle exec rake errbit_custom_cleanup > purge_log.log

I've put this in TEST so we can maybe check in a month if this works now and notices are cleaned up