Ability for test-containers to expose host ports to containers

[bdellegrazie]

Hi,

We have a situation where a CI process itself spins up a service, the service under test and then runs test-containers to spin up other containers which in turn need to talk to the service under test.
test containers implements this via https://java.testcontainers.org/features/networking/#exposing-host-ports-to-the-container
Currently this doesn't appear to work (test-containers cannot start the SSHD proxy properly).

This is being implemented in the context of Github Actions with self-hosted runners on K8S.
Do you have any suggestions as to how we can get the testcontainers/sshd proxy to work correctly?