Docker environments for web developers, each folder is a different environment.
You must have docker and docker-compose installed on your machine.
All php environments was built with the official images. The folders starts with "php" and are followed by php version, ending with a DB server name (mysql or maria DB) and its version, ex: php72mariadb103 = php version 7.2 and maria DB 10.3
In www folder you put your php codes, and just open your browser to se it running (on localhost:80). For convenience, phpMyAdmin is running on 8080 port.
Enter on your folder/environemnt (e.g php72mariadb103) and run:
docker-compose up