feat: add nix module

flake.nix

@@ -41,5 +41,7 @@
           ];
         };
       }
-    ));
+    )) // {
+      nixosModules.default = import ./module.nix self;
+    };
 }

module.nix

@@ -0,0 +1,29 @@
+self:
+{ config, lib, ... }:
+
+let
+  cfg = config.services.jetpham-website;
+  package = self.packages.x86_64-linux.default;
+in
+{
+  options.services.jetpham-website = {
+    enable = lib.mkEnableOption "Jet Pham's personal website";
+
+    domain = lib.mkOption {
+      type = lib.types.str;
+      default = "jetpham.com";
+      description = "Domain to serve the website on.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.caddy.virtualHosts.${cfg.domain} = {
+      extraConfig = ''
+        header Cross-Origin-Opener-Policy "same-origin"
+        header Cross-Origin-Embedder-Policy "require-corp"
+        root * ${package}
+        file_server
+      '';
+    };
+  };
+}