feat(bind9): Add nix-cache record and Binnenpost proxy

hosts/Binnenpost/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ pkgs, inputs, config, ... }:
 
 {
   config = {
@@ -83,6 +83,14 @@
 
       "traefik.http.routers.hugo.rule" = "Host(`hugo.depeuter.dev`)";
       "traefik.http.services.hugo.loadbalancer.server.url" = "https://192.168.0.11:444";
+
+      "traefik.http.routers.attic.rule" = "Host(`${inputs.self.nixosConfigurations.BinaryCache.config.homelab.services.attic.domain}`)";
+      "traefik.http.services.attic.loadbalancer.server.url" = 
+        let
+          bcConfig = inputs.self.nixosConfigurations.BinaryCache.config;
+          bcIp = (pkgs.lib.head bcConfig.networking.interfaces.ens18.ipv4.addresses).address;
+          bcPort = bcConfig.homelab.services.attic.port;
+        in "http://${bcIp}:${toString bcPort}";
     };
 
     system.stateVersion = "24.05";

modules/apps/bind9/db.depeuter.dev

@@ -1,6 +1,6 @@
 $TTL    604800
 @               IN      SOA     ns1 admin (
-                                 15 ; Serial
+                                 16 ; Serial
                              604800 ; Refresh
                               86400 ; Retry
                             2419200 ; Expire
@@ -40,6 +40,9 @@ sonarr          IN      A       192.168.0.33
 ; Development VM
 plex            IN      A       192.168.0.91
 
+; Binary Cache (via Binnenpost proxy)
+nix-cache       IN      A       192.168.0.89
+
 ; Catchalls
 *.production    IN      A        192.168.0.31
 *.development   IN      A        192.168.0.91