Docker nginx config only binds to ipv4 not ipv6

[Southclaws]

swagger-ui/docker/nginx.conf

Line 32 in f606c77

listen 8080;

I ran into a networking issue when deploying to Fly.io and it turns out the cause was the nginx instance serving Swagger-UI wasn't binding to all ipv6 interfaces, only ipv4.

https://community.fly.io/t/private-networking-internal-domain-not-working-for-one-service/11096/7

It seems the solution is to simply add another listen directive:

listen 8080;
listen [::]:8080;

I can open a PR for this if needed. I need to fork the repo anyway in order to get Swagger-UI working in our Fly.io internal VPN.

[char0n]

In the light of #8447, I've issued #8449. The change that we've introduced in #8438 is backward incompatible.

The PR #8449 makes the change backward compatible by disabling listen directive for IPv6 by default and with possibility to turn it on with PORT_IPV6 env variable.

Example usage:

set PORT_IPV6=8088

This will add following line to nginx config:

listen            [::]:8088;

[Southclaws]

Thanks for this! Forgot some environments don't support ipv6.