DB_HOST: db is the name of the MySQL service in the docker-compose.yml file. it needs to be used as the host in phpmyadmin because phpmyadmin and mysql aren't in the same container ...

This template repository let you quicly setup a new and conteinerized application with a LAMP stack (LAMP is for Linux, Apache, MySQL and PHP), totally configurable with Docker Compose.

Enter WampServer, an open source product that installs a PHP-apps-ready platform consisting of Apache web server, MySQL database, PHP, plus several helpful GUI-based utilities.