Add DEBUG environment variable

main.py

@@ -6,11 +6,14 @@ logging.basicConfig(
 from multiprocessing import Process, Queue
 from queue import Empty
 import RPi.GPIO as GPIO
+import os
 import json
 import requests
 import serial
 import time
 
+DEBUG = os.environ.get('DEBUG', False)
+
 RELAY_PIN = 17
 RFID_EN_PIN = 27
 CARDS_FILE = 'card_data.json'
@@ -141,4 +144,4 @@ if __name__ == '__main__':
 
     Process(target=reader_thread, args=(card_data,)).start()
     Process(target=update_thread, args=(card_data,)).start()
-    Process(target=watchdog_thread).start()
+    if not DEBUG: Process(target=watchdog_thread).start()