Azure app container for Nginx and Symfony

My goal is to have 2 azure app containers into the same environment who talk each other.

I have my environment who has this 2 containers name:

• nginx => 80 allow from any where
• symfony-app => 9000 allow from containers only

the ip of my symfony-app container is 100.100.0.116:

Into my nginx container telnet is working on 100.100.0.116 on port 9000

My issue is from nginx container Im not able to resolve the hostname symfony-app It's giving me the following IP:

root@nginx--dxl9wvh-7b456fdcd-zpqdq:/# telnet symfony-app 9000
Trying 100.100.252.251...
^C
root@nginx--dxl9wvh-7b456fdcd-zpqdq:/#

Do you have any idea what I missed ?

Thank you in advance for your help

Ok I found the issue.

The ingress type of the symfony container has to be tcp not http