Docker NGINX won't serve two sites - docker

Question

I'm using Docker for the first time, trying to build an NGINX proxy (also first time with NGINX). I've seen multiple guides that all seem to suggest I'm on the right path, but when I run the image, I get duplicate listen options for [::]:80 in /etc/nginx/conf.d/site.conf.
site.conf:
server {
listen 80;
listen [::]:80 ipv6only=on;
server_name gamersplane.local;
root /var/www;
index dispatch.php;
location / {
try_files $uri /dispatch.php$is_args$args;
}
location ~ \.php$ {
try_files $uri /dispatch.php =404;
fastcgi_pass api:9000;
fastcgi_index dispatch.php;
fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
#fixes timeouts
fastcgi_read_timeout 600;
include fastcgi_params;
}
}
api.conf:
server {
listen 80;
listen [::]:80 ipv6only=on;
server_name api.gamersplane.local;
root /var/www/api;
index dispatch.php;
location / {
try_files $uri /dispatch.php$is_args$args;
}
location ~ \.php$ {
try_files $uri /dispatch.php =404;
fastcgi_pass api:9000;
fastcgi_index dispatch.php;
fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
#fixes timeouts
fastcgi_read_timeout 600;
include fastcgi_params;
}
}
I have two compose files:
docker-compose.yal
proxy:
build:
context: ./nginx
dockerfile: Dockerfile
container_name: gamersplane-proxy
ports:
- 80:80
volumes:
- ../:/var/www
docker-compose.dev.yml
proxy:
volumes:
- ./nginx/dev/site.conf:/etc/nginx/conf.d/site.conf
- ./nginx/dev/api.conf:/etc/nginx/conf.d/api.conf

Answer 1

You need to remove ipv6_only=on, according to the documentation:
This parameter is turned on by default. It can only be set once on start.
So no need to add it to your config