Could you clarify what are you trying to do? Are you looking to access the phoenix dashboard in the browser? Or export traces from your application to it?
In any case, did you follow the guide on https://docs.arize.com/phoenix/deployment/deploying-phoenix? This has all the info to properly setup phoenix in a container and export traces to it. If you are running locally, you can go to localhost:6006 in your browser (provided you forward port 6006 in your container)
Assuming you were able to get the deployment running according to guidelines on Phoenix deployment page, you can just go to the URL in your browser. The URL depends on how you configured kubernetes and what ports you used. The default address for phoenix dashboard is http://localhost:6006/