v1.7.0

⚠️ This release changes the Composer version used for installing the dependencies: we now use version 2

While not strictly a BC break, this can be a problem depending on the way you install dependencies in your environment, proceed with caution.

[Docker] Revamp Dockerfile
[Docker] Update other packages in docker-compose.yml (mariadb and nginx)
[Dependencies] Update Symfony to 5.2 and other composer dependencies