Scrape nix-cache caddy

services/monitoring/prometheus.nix

@@ -208,6 +208,15 @@
           }
         ];
       }
+      {
+        job_name = "nix-cache_caddy";
+        static_configs = [
+          {
+            scheme = "https";
+            targets = [ "nix-cache.home.2rjus.net" ];
+          }
+        ];
+      }
     ];
     pushgateway = {
       enable = true;