From d27bb84cf00cd58ce279f0f105d95caa5b2f51e1 Mon Sep 17 00:00:00 2001
From: niten <niten@fudo.org>
Date: Wed, 13 Oct 2021 09:05:14 -0700
Subject: [PATCH] Try using host dns from docker.

I want the pihole image to access the parent host's dns-over-https
proxy, but ideally that proxy should only be exposed on 127.0.0.1.
According to
https://www.cloudsavvyit.com/14114/how-to-connect-to-localhost-within-a-docker-container/
I can alias the host in docker. Let's give it a shot.
---
 config/host-config/limina.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/config/host-config/limina.nix b/config/host-config/limina.nix
index 4f52de9..fcf1fc0 100644
--- a/config/host-config/limina.nix
+++ b/config/host-config/limina.nix
@@ -99,10 +99,11 @@ in {
             image = "pihole/pihole:2021.10";
             autoStart = true;
             ports = [ "5353:53/tcp" "5353:53/udp" "3080:80/tcp" ];
+            extraOptions = [ "--add-host=host.docker.internal:host-dns" ];
             environment = {
               # ServerIP = primary-ip;
               VIRTUAL_HOST = "dns-hole.sea.fudo.org";
-              DNS1 = "127.0.0.1#${toString dns-proxy-port}";
+              DNS1 = "host-dns#${toString dns-proxy-port}";
             };
             volumes = [
               "/state/pihole/etc-pihole/:/etc/pihole/"