From aed2c40e7773449c6cb5f120cdc6b12a6bdb4986 Mon Sep 17 00:00:00 2001
From: lunik1 <ch.gpg@themaw.xyz>
Date: Sat, 10 Apr 2021 00:51:40 +0100
Subject: [PATCH] Add service.dns

---
 CHANGELOG.md                                       | 2 ++
 src/nix/modules/service/docker-compose-service.nix | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9947529..5a49809 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Next
 
+* Support `service.dns`, for overriding the DNS servers used by containers.
+
 * Support `service.labels`, which is useful for autodiscovery among other things.
 
 * Add a tested example for Traefik with label-based routing.
diff --git a/src/nix/modules/service/docker-compose-service.nix b/src/nix/modules/service/docker-compose-service.nix
index 4da0ab3..385cff0 100644
--- a/src/nix/modules/service/docker-compose-service.nix
+++ b/src/nix/modules/service/docker-compose-service.nix
@@ -115,6 +115,12 @@ in
         ${dockerComposeRef "devices"}
       '';
     };
+    service.dns = mkOption {
+      type = listOf str;
+      default = [];
+      example = [ "8.8.8.8" "8.8.4.4" ];
+      description = dockerComposeRef "dns";
+    };
     service.labels = mkOption {
       type = attrsOf str;
       default = {};
@@ -258,6 +264,8 @@ in
     inherit (config.service) extra_hosts;
   } // lib.optionalAttrs (config.service.hostname != null) {
     inherit (config.service) hostname;
+  } // lib.optionalAttrs (config.service.dns != []) {
+    inherit (config.service) dns;
   } // lib.optionalAttrs (config.service.labels != {}) {
     inherit (config.service) labels;
   } // lib.optionalAttrs (config.service.links != []) {