Introduction
Because docker containers bind to ports on a machine level it is not possible to have multiple iv containers running from the same port.
Troubleshootng Procedure
Use a rev proxy when running multiple docker containers from a single machine.
This allows external access to the rev proxy from a single port and the rev proxy can then forward the requests on to the different ports where the containers are running in NavVis IVION. To forward to a specific port in nginx simply change the port in the proxy pass line in the location config file.