Add details in config page

homebridge-ui/public/index.html

@@ -3,7 +3,11 @@
 		<li>You will need to know the IP address or the domain name you use to connect to homebridge. Usually it will be the address in your browser</li>
 		<li>Click on the button below to start the authentication process</li>
 		<li>Login to your hilo account</li>
-		<li>Enter the ip address or domain name you took not at step 1 and add the port 8880 at the end. Examples: http://192.168.0.10:8880 http://homebridge.local:8880</li>
+		<li>Enter the ip address or domain name you took not at step 1 and add the port 8880 at the end. Examples: http://192.168.0.10:8880 http://homebridge.local:8880
+			<ul>
+				<li>Note: Depending on how you have configured your homebridge server, you will need to ensure that port 8880 is routed to your homebridge server. For example for a docker configuration you will need to add `-p 8880:8880` to your docker command. If you are using a reverse proxy, you will need to add port 8880 to your configuration</li>
+			</ul>
+		</li>
 		<li>Click on the "Save" button, then click on the "Link account" button</li>
 		<li>You can save your config and restart your homebridge server</li>
 	</ol>