A very simple API ({"ping": "pong"}) for testing Symfony 4 with Docker installation process.
Based on https://github.com/eko/docker-symfony.
If you clone this repository without following the tutorial, you have to use the following commands:
docker-compose up -d
docker-compose run php composer install
and add 127.0.0.1 symfony.localhost
to your hosts file. (see #1)