Hi, I am trying to use nginx with fastcgi pass to a php-fpm service where my laravel app lives. In my local docker compose setup, I would simply set fastcgi_pass to where my Laravel container host is, e.g. fastcgi_pass ${APP_HOST}:9000;

But on Railway, the nginx is giving me the error that the upstream(Laravel service) is timed out. I saw ipv6 address in the nginx error log about timed out that the APP_HOST must have converted so I guess it does find the correct host. However, with the correct host and port settings, somehow it time out and I have exhausted ways to find out what is happening under the hood. Does anyone have similar experience that can share with me how to deploy a php-fpm with nginx application?