The ACME Protocol is an IETF Standard ( and now embedded in my tutorials for on Debian or Ubuntu as well.
Find out more:

nginx-1.15.9 mainline version has been released with ssl_certificate and ssl_certificate_key variables support. Read full CHANGES here:

Build your own @nextcloud server using one shell script - now ready for Debian Stretch 9.6, Ubuntu 18.04 Bionic Beaver AMD64 and Ubuntu 18.04 Bionic Beaver ARM64 (OdroidC2)

You can find all relevant @nginxorg configuration files for @nextcloud here:

beyond that you can find two fail2ban-filter and two jail configuration files to harden your environment:

Update for #Nextcloud Backup/Restore bash scripts: Backup directory can be specified by parameter. Local external storage can now also be included in the backup. @nextcloud

Awesome: @nextcloud 15 and Collabora Office (docker) on the same server the easy way. Just follow these instructions
and you will be able to work with office documents within your mobile clients either.

Generalistic and moderated instance.