Receive "noble warning: adapter state unauthorized" when Homebridge runs in Docker container
### Expected Behavior
homebridge-mi-hygrothermograph works fine in Homebridge@Docker container.

### Current Behavior
homebridge-mi-hygrothermograph is not working when used inside of Docker container.

### Steps to Reproduce (for bugs)
<!-- Please add a series of steps to reproduce the problem. -->

### Versions
<!-- Please run commands and include versions below. -->
- **homebridge**: 0.4.48
- **homebridge-mi-hygrothermograph**: v2.1.0
- **node**: 10.15.3
- **OS**: LibreELEC 9.0.1

### Homebridge Log / Command Output
```
[4/13/2019, 8:17:12 PM] [Temperature & Humidity] Start scanning.
noble warning: adapter state unauthorized, please run as root or with sudo
               or see README for information on running without root/sudo:
               https://github.com/sandeepmistry/noble#running-on-linux
[4/13/2019, 8:17:12 PM] [Temperature & Humidity] Stop scanning. (unauthorized)
[4/13/2019, 8:17:12 PM] [Temperature & Humidity] Stopped scanning.
[4/13/2019, 8:17:15 PM] [Temperature & Humidity] Start scanning.
[4/13/2019, 8:17:15 PM] [Temperature & Humidity] Error: Could not start scanning, state is unauthorized (not poweredOn)
    at Noble.scan (/homebridge/node_modules/@abandonware/noble/lib/noble.js:97:19)
    at Noble.startScanning (/homebridge/node_modules/@abandonware/noble/lib/noble.js:126:10)
    at Scanner.start (/homebridge/node_modules/homebridge-mi-hygrothermograph/lib/scanner.js:34:13)
    at Timeout.setTimeout [as _onTimeout] (/homebridge/node_modules/homebridge-mi-hygrothermograph/lib/scanner.js:70:14)
    at ontimeout (timers.js:436:11)
    at tryOnTimeout (timers.js:300:5)
    at listOnTimeout (timers.js:263:5)
    at Timer.processTimers (timers.js:223:10)

```
