On the first run, this script shows the error 'diff: can't stat '/output/cert.pem': No such file or directory', because the file does not exist in the folder `/output` yet. This bugfix ensures, that the diff is only called, when all required files are available.
Before it only outputted a pem-file with the server-certificate —
however, it seems some clients want the fullchain delivered, as it’s
common with letsencrypt.
closes#847
DjVinnii