Docker localhost not displaying

[MikeRobe23]

Not sure if I'm doing it wrong as I'm still very novice at coding and new to docker but I can't view the localhost that it opens. I've tried troubleshooting and I can view my own created localhosts as well as other ones in docker. Am I supposed to run the docker image first or does agent zero run that on its own too? Where are the files agent zero creates saved? I'm guessing that'd be in the docker localhost, right?