Try setting config for dual deployment

WebDisplay/src/config.json

@@ -1,7 +0,0 @@
-{
-    "API_PREFIX": "",
-    "HOME_ASSISTANT_TOKEN": "",
-    "HOME_ASSISTANT_URL": "",
-    "GARAGE_DEVICE": "",
-    "ALARM_DEVICE": ""
-}

WebDisplay/src/environment.ts

@@ -1,23 +1,21 @@
-import config from './config.json';
-
 export default class Environment {
     public static getUrlPrefix(): string {
-        return config.API_PREFIX;
+        return '%API_PREFIX%';
     }
 
     public static getHomeAssistantUrl(): string {
-        return config.HOME_ASSISTANT_URL;
+        return '%HOME_ASSISTANT_URL%';
     }
 
     public static getHomeAssistantToken(): string {
-        return config.HOME_ASSISTANT_TOKEN;
+        return '%HOME_ASSISTANT_TOKEN%';
     }
 
     public static getGarageDevice(): string {
-        return config.GARAGE_DEVICE;
+        return '%GARAGE_DEVICE%';
     }
 
     public static getAlarmDevice(): string {
-        return config.ALARM_DEVICE;
+        return '%ALARM_DEVICE%';
     }
 }