added healthcheck

docker-compose.yml

@@ -6,6 +6,13 @@ services:
     restart: unless-stopped
     volumes:
       - ./mosquitto/moquitto.conf:/mosquitto/config/mosquitto.conf
+    user: 1883:1883
+    healthcheck:
+      test: ["CMD", "mosquitto_sub", "-t", "$$SYS/#", "-C", "1", "-i", "healthcheck", "-W", "3"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 10s
 
   z2m:
     container_name: zigbee2mqtt