This Docker setup is maintained as an alternative way to install vendors and run ad hoc local commands without host PHP or Composer.

The php-fpm image provides:

• PHP 8.5 FPM
• Composer 2
• Node.js 22 and npm
• PHP extensions used by the Symfony 8 fixture: intl, pdo_mysql, pdo_sqlite, and zip
• Linux libraries needed by the Cypress binary

Build the image:

docker compose build php-fpm

Install PHP and JavaScript vendors from the repository root:

docker compose run --rm --no-deps -u "$(id -u):$(id -g)" php-fpm composer update
docker compose run --rm --no-deps -u "$(id -u):$(id -g)" php-fpm npm install

Run ad hoc commands in the same image:

docker compose run --rm --no-deps -u "$(id -u):$(id -g)" php-fpm composer test
docker compose run --rm --no-deps -u "$(id -u):$(id -g)" php-fpm npm test

The compose file stores Composer, npm, and Cypress caches under .cache/.