add healthcheck

compose.nodered.yaml

@@ -11,3 +11,8 @@ services:
     extra_hosts:
       - "host:${HOST_IP}"
       - "mqtt:${HOST_IP}"
+    healthcheck:
+          test: ["CMD-SHELL", "node -e \"require('http').get('http://localhost:1880', (res) => process.exit(res.statusCode === 200 ? 0 : 1)).on('error', () => process.exit(1))\""]
+          interval: 30s
+          timeout: 10s
+          retries: 3