Drupal is a Content Management System (CMS) to maintain and publish an internet website. It's an open-source content management system (CMS) with a large, supportive community. It's used by millions of people and organizations around the globe to build and maintain their websites. 

For installation steps, click on the link
https://wiki.crowncloud.net/?How_to_Install_Drupal_On_Alma_Linux_8