[Enhancement]: Expose configuration of ExposeHostPortsAsync container `PortForwardingContainer`

[Muchaszewski]

Problem

I want to configure PortForwardingContainer so that I can add custom logger to the TestContainer that is used by ExposeHostPortsAsync.

Current code:

await TestcontainersSettings.ExposeHostPortsAsync(3050);

Expected code:

await PortForwardingSettings.Configure(builder =>
        {
            var logger = GetLogger<PortForwardingContainer>();
            return builder
                .WithLogger(logger);
        }).ExposeHostPortsAsync(3050);

Solution

Proposed solutions:

1. Expose PortForwardingContainer from internal to public so that configuration can be made on a instance, and split Instance from Build so that builder can be preconfigured
2. Expose OptionsBuilder via ExposeHostPortsAsync
3. Add new endpoint that allows for ConfigureExposeHostPorts

Benefit

I can redirect all the logs and monitor what is happening via logger of my choice

Alternatives

I tried to copy PortForwardingContainer and all necessary classes from the source repository and use them with configuration instead of TestcontainersSettings.ExposeHostPortsAsync but it doesn't seem to be working.

sshd image is created, but /etc/hosts is not modified and there is lack of documentation or code reference on why is that. The only part I changed is to expose the builder part of the container.

Would you like to help contributing this enhancement?

Yes

[HofmeisterAn]

Thank you for creating the issue. Currently, we are not exposing the builder or allowing developers to configure it. Have you tried your suggestion locally? Do you have a POC?