[Dovecot] Add quota_notify script

[Dovecot] Some minor changes to quarantine notification script to catch more errors

data/Dockerfiles/dovecot/Dockerfile

@@ -119,6 +119,7 @@ COPY docker-entrypoint.sh /
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 COPY stop-supervisor.sh /usr/local/sbin/stop-supervisor.sh
 COPY quarantine_notify.py /usr/local/bin/quarantine_notify.py
+COPY quota_notify.py /usr/local/bin/quota_notify.py
 
 ENTRYPOINT ["/docker-entrypoint.sh"]
 CMD exec /usr/bin/supervisord -c /etc/supervisor/supervisord.conf