Host header for Ionic proxy config

Ionic Framework ionic-v3
1

How can I add Host header to Ionic proxy config ? I need to define the Host header to access Kong API gateway.

Here is my ionic.config.json file

{
"name": "test_name",
"app_id": "test_id",
"type": "ionic-angular",
"integrations": {
   "cordova": {}
 },
"proxies": [
   {
     "path": "/api/test",
     "proxyUrl": "http://docker-test:6200/test"
   }
 ]
}