setting up joomla locally - joomla-projects/Joomla-Academy-Onboarding GitHub Wiki

1. Clone the Joomla repository: git clone https://github.com/joomla/joomla-cms.git
2. Install dependencies: composer install
3. Set up a local web server (Apache, Nginx, or built-in PHP server)
4. Create a MySQL/PostgreSQL database
5. Run the Joomla installer by accessing your local site in a browser

see also: https://docs.joomla.org/J5.x:Setting_Up_Your_Local_Environment