dunglas/symfony-docker : Internal call to same project

I’ve just tried https://github.com/dunglas/symfony-docker/
It seems very cool and work on the road !

But i can’t ping my server sf from sf… i’m trying to call my own api in the same project but the ping localhost from sf does not seem to work.

I’ve put a call.php and a receipt.php in public/, but i don’t know what to do so that call.php ping receipt.php
I can access to https://localhost/call.php but call.php can’t access https://localhost/receipt.php from my php script. i can access https://localhost/receipt.php from my navigator.

if somebody have a clue ?
ty.