feat: add dns container with AGH + unbound

lxc/dns.nix

@@ -0,0 +1,41 @@
+{
+  pkgs,
+  name,
+  containersMapping,
+  ...
+}:
+let
+  hostname = pkgs.lib.removeSuffix ".nix" name;
+  infra = import ../lib/constants.nix;
+  container_id = containersMapping.${hostname};
+  ip = infra.build_ip container_id;
+  domainname = "${hostname}${infra.domains.internal}";
+in
+{
+  cores = 2;
+  memory = "2G";
+  disk = "4G";
+  swap = 512;
+  ports = [
+    80
+    53
+    12345
+  ];
+  exposed = false;
+  services = {
+    adguardhome = import ./dns/adguardhome-config.nix { inherit infra ip domainname; };
+    unbound = {
+      enable = true;
+    };
+  };
+  logging.enable = true;
+  logging.metrics.enable = true;
+  etc."alloy/logs-adguard.alloy".text =
+    (import ./dns/logs-adguard.alloy.nix {
+      inherit ip domainname;
+    }).out;
+  etc."alloy/logs-unbound.alloy".text =
+    (import ./dns/logs-unbound.alloy.nix {
+      inherit ip domainname;
+    }).out;
+}