Add jenkins

modules/jenkins/default.nix

@@ -0,0 +1,21 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.dov.jenkins;
+in {
+  options.dov.jenkins.enable = mkEnableOption "jenkins config";
+
+  config = mkIf cfg.enable {
+    services.jenkins = {
+      enable = cfg.enable;
+      port = 8081;
+    };
+
+    networking.firewall = {
+      enable = cfg.enable;
+      allowedTCPPorts = [ 8081 ];  # HTTP and HTTPS
+    };
+  };
+}