dehydrated binary package in Ubuntu Oracular i386

 The dehydrated ACME client allows signing certificates with an
 ACME server, like the one provided by the Let’s Encrypt certificate
 authority (letsencrypt.org). It is implemented as a relatively simple
 Bash script, which uses curl to communicate with the ACME server and
 OpenSSL to deal with keys, sign requests and certificates.
 .
 The ACME (Automated Certificate Management Environment) protocol makes
 it possible to automatically obtain browser-trusted certificate.

Source package