xmrig-proxy/2.8.2-dev fails to apply values from config.json, defaulting to port=3333
xmrig-proxy/2.8.2-dev 
in config
```
    "bind": [
        {
            "host": "0.0.0.0",
            "port": 4444,
            "tls": false
        },
    ],
```

and *xmrig-proxy/2.8.2-dev* binds to default port 3333 and ipv6 socket anyway.

I had to patch in code to get my needed values. Then it worked nice.