warning for suppressed logs when using MAILTO

README.md

@@ -18,6 +18,7 @@ If using remote repositories mount your .ssh to /root/.ssh within the container.
 If you want to mail the results from cron:
 * Add your mail relay details to the [env file](.env.template) or mount your own [msmtprc](https://wiki.alpinelinux.org/wiki/Relay_email_to_gmail_(msmtp,_mailx,_sendmail) to `/etc/msmtprc`
 * Add add your mail address to crontag.txt and uncomment the line, e.g. `MAILTO=log@example.com`
+* Please note that logs will no longer end up in Docker logs when MAILTO is set.
 
 ### Example run command
 ```