Update `README.md` #61

	name: tests

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	test:
	runs-on: ubuntu-latest
	services:
	docker:
	image: docker:20.10.7
	options: --privileged

	strategy:
	matrix:
	php-version: [php81, php82, php83]

	steps:
	- uses: actions/checkout@v4

	- name: Validate composer files
	run: composer validate --strict

	- name: Cache Composer dependencies
	uses: actions/cache@v4
	with:
	path: vendor
	key: ${{ runner.os }}-php-${{ matrix.php-version }}-${{ hashFiles('**/composer.lock') }}
	restore-keys: ${{ runner.os }}-php-${{ matrix.php-version }}-

	- name: Install dependencies
	run: docker compose run --rm -v ${{ github.workspace }}/test-output:/app/test-output ${{ matrix.php-version }}composer composer install --prefer-dist

	- name: Run tests
	run: docker compose run --rm -v ${{ github.workspace }}/test-output:/app/test-output ${{ matrix.php-version }} vendor/bin/phpunit

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