e5a9190e1c
The common problems that users ran into is that they are not able to access the container's console in browser (via Horizon). The reason is that the ws_proxy's URL is not accessible from the browser. Either the configured IP address is not accessible from outside or the port was blocked. This patch adds a note to explain how to configure the websocket proxy's URL propertly. Change-Id: Ifac45550f22409c2348e1b14ff46606a7bf09a89