FEAT: add NGINX_IP_LISTENING_PROTOCOL

[yuuzukatsu]

Hello,

I've been running into some problem with the default configuration listening to IPv6. I was hoping with this env, it enables user to toggle whether they want to listen on IPv6 address or not

adding NGINX_IPV6=false environment will delete line containing listen [::]: on both /etc/nginx/site-opts.d/http.conf and /etc/nginx/site-opts.d/https.conf

I've tested this entrypoint script changes specifically in 8.2-fpm-nginx but adding few lines like this should work in most nginx variation

Thank you

[tomschlick]

It might be a good idea to add NGINX_IPV4 toggle to this as well. Many K8s environments are IPv6 only (LB / NAT GW handling IPv4 ingress/egress) and could benefit from turning it off.

[jaydrogers]

Thank you @yuuzukatsu for the idea on this, and thanks to @tomschlick for chiming in with more use cases.

Instead of NGINX_IPV6 being a boolean, I created NGINX_LISTEN_IP_PROTOCOL (default all). You can switch it between all, ipv4, and ipv6 to get your desired results.

This will be made available in V4.0:

• Release 4.0: Add FrankenPHP & more Laravel optmizations #283