Temporarily change to staging Let's Encrypt server

services/nextcloud.nix

@@ -43,6 +43,7 @@
       environmentFile = "/var/lib/nextcloud/dns-creds";
       dnsProvider = "ovh";
       group = "nginx";
+      server = "https://acme-staging-v02.api.letsencrypt.org/directory";
     };
   };
 }