TV still asking for permission when you reboot homebridge
Hi guys. Whenever i restart Homebridge i'm getting that permission prompt on the TV. It's a new LG running the latest WebOS.

I am running Homebridge in a Docker container on my Synology NAS. Could i get help on how to use the `keyFile` field? Do i need to mount a folder in the docker volume and then specify a path? Not sure. Thanks in advance!

```
    "platforms": [
        {
            "devices": [
                {
                    "name": "LG TV",
                    "ip": "192.168.3.XX",
                    "mac": "XX:XX:XX:XX:XX:XX",
                    "pollingInterval": 5,
                    "showInputButtons": true,
                    "volumeControl": "none",
                    "volumeLimit": 1,
                    "channelControl": false,
                    "mediaControl": false,
                    "infoButtonAction": "INFO",
                    "inputs": [
                        {
                            "appId": "com.webos.app.hdmi1",
                            "name": "HDMI 1"
                        },
                        {
                            "appId": "com.webos.app.hdmi2",
                            "name": "HDMI 2"
                        }
                    ]
                }
            ],
            "platform": "webostv"
        }
```