make sure postgres is running before starting dnote service

modules/services/dnote.nix

@@ -82,6 +82,8 @@ in
       enable = true;
       description = "Dnote server";
       environment = lib.mapAttrs (_: value: serializeEnvVar value) (cfg.environment // immutableEnvironment);
+      after = [ "postgresql.service" ];
+      requires = [ "postgresql.service" ];
       serviceConfig = {
         ExecStart = "${pkgsUnstable.dnote}/bin/dnote-server -port ${toString cfg.port} start";
         EnvironmentFile = lib.mkIf (cfg.environmentFile != null) cfg.environmentFile;