Change Synology shortcut port
**Describe Your Problem:**
Hi, 
I have decided to change the port i'm using to access my ConfigUI in order to be a little more secured.
I've installed Homebridge using the .spk file, so I have this nice shortcut in the menu, but it still redirects to the defeault 8581 port - any chance I can change it? 

**Logs:**
there's no logs for that issue

```
Show the Docker container logs here
```
Again, I think the issue isn't part of the docker, as it works well./
**Docker Start Command:**
all configurations are default. 

**Homebridge Config:**
"name": "Config",
            "port": <not8581>,
            "auth": "form",
            "theme": "dark-mode",
            "tempUnits": "c",
            "platform": "config"
```json

**Screenshots:**

![image](https://user-images.githubusercontent.com/13572969/63214165-6b4e0b80-c11d-11e9-98fc-01c092c567ca.png)

in case the image above doesn't appear, here is the link itself
https://user-images.githubusercontent.com/13572969/63214149-39d54000-c11d-11e9-86dd-161f9bdf4c34.JPG


**Environment:**

* **Host Operating System**: Synology
* **Docker Version**: 17.05.0-0401
* **Image Tag / Type**: latest\1.0.7
