Zoraxy Container HTTP Proxy to another Container not possible

[MrMacintosh-GIT]

Hello,
I have a little problem and hope someone can help me or give a tip. I have an Intel N100 with Alpinelinux as a server operating system. Podman runs on the system. I have a separated user on which the docker container runs with Zoraxy. The inquiries from port 80 and 443 go into this container. Now Zoraxy should forward to the container as a reverseproxy, the right URL request. This runs on the same computer and is available via port 4533. In the browser and from the server I can address the port, from the Docker container from Zoraxy this is not possible.

Zoraxy (Container 1): 192.168.0.3:9000
Dienst (Container 2): 192.168.0.3:4533

Said: The firewall was already completely deactivated. It may not have been that.

Somehow it is unclear to me why this doesn't work.