Does acme-client take in care /etc/acme-client.conf in any way? Entries as the documented in acme-client.conf man page:
domain example.com {
alternative names { secure.example.com }
domain key /etc/ssl/private/example.com.key
domain certificate /etc/ssl/example.com.crt
sign with letsencrypt
}
seem to be ignored when you run acme-client. And acme-client man page
doesn't explain how to call it or even mention a configuration file.

