diff --git a/.gitmodules b/.gitmodules
index d71c6a72..eb472877 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,6 @@
 [submodule "dotfiles/config/alacritty/themes"]
 	path = dotfiles/config/alacritty/themes
 	url = https://github.com/alacritty/alacritty-theme
+[submodule "nixos/railbird.ai"]
+	path = nixos/railbird.ai
+	url = git@github.com:billnerds/railbird.ai.git
diff --git a/nixos/cache-server.nix b/nixos/cache-server.nix
index 6b6b4ba6..d6300545 100644
--- a/nixos/cache-server.nix
+++ b/nixos/cache-server.nix
@@ -1,20 +1,45 @@
-{ config, makeEnable, ... }:
-makeEnable config "modules.cache-server" false {
-  age.secrets."cache-priv-key.pem".file = ./secrets/cache-priv-key.pem.age;
-
-  services.nix-serve = {
-    enable = true;
-    secretKeyFile = config.age.secrets."cache-priv-key.pem".path;
-    port = 5050;
+{ config, makeEnable, lib, ... }:
+with lib;
+let cfg = config.modules.cache-server;
+in
+{
+  options = {
+    modules.cache-server = {
+      enable = mkEnableOption "nix cache server";
+      port = mkOption {
+        type = types.int;
+        default = 8080;
+      };
+      host-string = mkOption {
+        type = types.string;
+        default = "0.0.0.0";
+      };
+      path = mkOption {
+        type = types.string;
+        default = "/";
+      };
+    };
   };
 
-  services.nginx = {
-    enable = true;
-    recommendedProxySettings = true;
-    virtualHosts = {
-      "0.0.0.0" = {
-        locations."/".proxyPass = "http://${config.services.nix-serve.bindAddress}:${toString config.services.nix-serve.port}";
+  config = mkIf cfg.enable {
+    age.secrets."cache-priv-key.pem".file = ./secrets/cache-priv-key.pem.age;
+
+    services.nix-serve = {
+      enable = true;
+      secretKeyFile = config.age.secrets."cache-priv-key.pem".path;
+      port = 5050;
+    };
+
+    services.nginx = {
+      enable = true;
+      recommendedProxySettings = true;
+      virtualHosts = {
+        "${cfg.host-string}" = {
+          locations."${cfg.path}".proxyPass = "http://${config.services.nix-serve.bindAddress}:${toString config.services.nix-serve.port}";
+          listen = [ { addr = "0.0.0.0"; port = cfg.port; } ];
+        };
       };
     };
   };
 }
+
diff --git a/nixos/machines/biskcomp.nix b/nixos/machines/biskcomp.nix
index 42e83388..11671aba 100644
--- a/nixos/machines/biskcomp.nix
+++ b/nixos/machines/biskcomp.nix
@@ -15,7 +15,28 @@
   modules.syncthing.enable = true;
   modules.fonts.enable = true;
   modules.nixified-ai.enable = false;
-  modules.cache-server.enable = true;
+  modules.cache-server = {
+    enable = true;
+    host-string = "192.168.1.44 railbird.ai 1896Folsom.duckdns.org 0.0.0.0 67.162.131.71";
+    port = 80;
+    path = "/nix-cache";
+  };
+
+  services.nginx = {
+    enable = true;
+    recommendedProxySettings = true;
+    recommendedGzipSettings = true;
+    recommendedTlsSettings = true;
+    virtualHosts = let conf = {
+      root = ../railbird.ai;
+      locations."/" = {
+        index = "index.html";
+      };
+    };
+    in {
+      "192.168.1.44 railbird.ai 1896Folsom.duckdns.org 0.0.0.0 67.162.131.71" = conf;
+    };
+  };
 
   services.plex = {
     enable = true;
diff --git a/nixos/railbird.ai b/nixos/railbird.ai
new file mode 160000
index 00000000..74ee66bc
--- /dev/null
+++ b/nixos/railbird.ai
@@ -0,0 +1 @@
+Subproject commit 74ee66bcb6c3a1ba509d1e78435e391255dc0647