By creating a pull request with the installer added …
But to be honest it isn’t that difficult:
- Set Enabled flag to true
https://github.com/hestiacp/hestiacp/blob/d323e9972c69bef151c8d86cc0ac2cf69c362b99/web/add/webapp/index.php#L35 - Copy https://github.com/hestiacp/hestiacp/blob/main/web/src/app/WebApp/Installers/WordpressSetup.php and rename it to DrupalSetup.php
- And modify the code
Was able to install Drupal with composer and then discovered a bug. And forgot about it. (Plus server crashed where the changes where hosted on)