fix client application if no db is set

mqttclient/main.go

@@ -26,7 +26,7 @@ var messagePubHandlerBoiler mqtt.MessageHandler = func(client mqtt.Client, msg m
 	if os.Getenv("OUTPUT_FILE_NAME_RAW") != "" {
 		dumpRawData(string(msg.Payload()), os.Getenv("OUTPUT_FILE_NAME_RAW"))
 	}
-	if os.Getenv("OUTPUT_DATABSE") != "" {
+	if os.Getenv("OUTPUT_DATABSE") != "" || os.Getenv("CLIENT_USE_SERVER") == "true" {
 		task := types.Task{
 			Date:     time.Now().UTC(),
 			Data:     string(msg.Payload()),