Podman-hosted containers may not be able to reach Aspire services

[timheuer]

Using the HealthChecksUI sample in the dotnet/aspire-samples repo and Podman, the HealthChecks UI dashboard was not able to reach the healthchecks URIS:

with looking at the logs exceptions:

GetHealthReport threw an exception when trying to get report from http://host.containers.internal:61669/healthz configured with name webfrontend.
      System.Net.Http.HttpRequestException: Connection refused (host.containers.internal:61669)
       ---> System.Net.Sockets.SocketException (111): Connection refused

This appears to be a common issue with Podman 5+ presently: containers/podman#22237

This operates differently when just using Docker and the host.docker.internal URIs don't seem to be impacted, but Podman and the mappings used in the Podman machine network config seem to impact these situations where a container needing to accessing something at the host.containers.internal URI may fail given this issue.