gitea: Disable user registrations

Only admin can create new users now

hosts/bebop/gitea.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ pkgs, ... }:
 {
   environment.systemPackages = [ pkgs.gitea ];
 
@@ -30,6 +30,13 @@
           DISABLE_HTTP_GIT = false;
           USE_COMPAT_SSH_UPI = true;
         };
+        service = {
+          DISABLE_REGISTRATION = true;
+          REGISTER_EMAIL_CONFIRM = true;
+          explore = {
+            REQUIRE_SIGNIN_VIEW = true;
+          };
+        };
       };
     };