added healthcheck and backupInterval to podman-postgresql

modules/podman-postgresql.nix

@@ -54,6 +54,13 @@ in
             default = "/var/backup/postgresql";
           };
 
+          backupInterval = mkOption {
+            description = "The interval to backup the database";
+            type = types.str;
+            default = "hourly";
+            example = "daily";
+          };
+
         };
       }));
     };
@@ -74,7 +81,10 @@ in
           "/var/lib/postgresql/${cfg.database}:/var/lib/postgresql/data"
           "${cfg.passwordFile}:${cfg.passwordFile}"
         ];
-        extraOptions = conf.podman.extraOptions;
+        extraOptions = conf.podman.extraOptions ++ [
+          "--health-cmd=pg_isready -d ${cfg.database} -U ${cfg.user}"
+          "--health-start-period=10s"
+        ];
       };
     }) cfgs);
 
@@ -96,7 +106,7 @@ in
       };
       timers."podman-postgresql-${cfg.database}-backup" = {
         timerConfig = {
-          OnCalendar = "hourly";
+          OnCalendar = cfg.backupInterval;
         };
         wantedBy = [ "podman-postgresql-${cfg.database}.service" ];
       };