Add apps subdomain (#36)

* Add apps subdomain

* Fix formatting

PulumiWebServer/Nix/apps/apps.nix

@@ -0,0 +1,32 @@
+{
+  lib,
+  config,
+  ...
+}: {
+  options = {
+    services.apps-config = {
+      domain = lib.mkOption {
+        type = lib.types.str;
+        example = "example.com";
+        description = lib.mdDoc "Top-level domain to configure";
+      };
+      subdomain = lib.mkOption {
+        type = lib.types.str;
+        example = "apps";
+        description = lib.mdDoc "Subdomain in which to put apps";
+      };
+      port = lib.mkOption {
+        type = lib.types.port;
+        description = lib.mdDoc "App server localhost port";
+        default = 9521;
+      };
+    };
+  };
+  config = {
+    services.nginx.virtualHosts."${config.services.apps-config.subdomain}.${config.services.apps-config.domain}" = {
+      forceSSL = true;
+      enableACME = true;
+      root = ./static;
+    };
+  };
+}