My oberservation in the documentation 25.3.0

Following the official documentation for Carbonio CE a thing I would do different.

I am revering to section Single-Server Installation - Automatic Script-based Installation

The script does NOT add the zextras repo!

Therefore I would do:

"Step 1: Repository Configuration first"

followed by:

"Step 2: Setting Hostname"

Now I would run the downloaded:

install_carbonio_ce_singleserver_ubuntu.sh script.