add runner to git server

modules/git/server.nix

@@ -44,7 +44,20 @@ in
           LANDING_PAGE = "/yanlin";
         };
         service.DISABLE_REGISTRATION = true;
+        actions.ENABLED = true;
       };
     };
+
+    virtualisation.podman.enable = true;
+
+    services.gitea-actions-runner.instances.default = {
+      enable = true;
+      name = "default";
+      url = "https://${cfg.domain}";
+      tokenFile = "/var/lib/forgejo-runner/token";
+      labels = [
+        "node-20:docker://node:20-bookworm"
+      ];
+    };
   };
 }