add git user to rgit service

configuration.nix

@@ -10,7 +10,7 @@
   boot.tmp.cleanOnBoot = true;
   networking.hostName = "server";
   networking.domain = "";
-  networking.enableIPv6 = true;
+  networking.enableIPv6 = false;
   networking.firewall = {
     enable = true;
     allowedTCPPorts = [80 443 9418];

services/rgit.nix

@@ -20,5 +20,6 @@
     environment = {
       REFRESH_INTERVAL = "5m";
     };
+    user = "git:git";
   };
 }