Install dependencies with docker:
$ docker run --rm --interactive --tty --volume $PWD:/app composer install --ignore-platform-reqs --no-scripts
Update dependencies with docker:
$ docker run --rm --interactive --tty --volume $PWD:/app composer update --ignore-platform-reqs --no-scripts
Run tests
$ docker run -v $(pwd):/app --rm phpunit/phpunit test/ --bootstrap vendor/autoload.php