Add missing function WithNetworkAliases

[vlaskal]

Is your feature request related to a problem? Please describe.
I have application which behaves differently based on url eg. branding.
I would like to test this application deployed in docker, that branding switching works correctly.

Describe the solution you'd like
I'd like to define several aliases for my container as Docker CLI option --network-alias does.
Also this function is available in Java version of testcontainers.

Describe alternatives you've considered
I tried to look around for other libraries and found just one. The reason why I would like to see this function is similarity with Java version.

Additional context
I think this is basic functionality which is missing.

Let me know what you think about this request.
I can help with it in case.

[HofmeisterAn]

Sounds good 👍 I just can't take care of it right now. Would you like to contribute and work on it?

[vlaskal]

Cool, I can try. This is not a problem for me.

Unfortunatelly I have Rancher desktop which cause me problem and error which is described here #431 but is caused by dotnet/Docker.DotNet#554.
Can take a time to solve main problem or do you have any other idea how to overcome this error?

[HofmeisterAn]

I haven't had any time to take a look into this issue, sorry. Usually, I use Docker Desktop or Docker Enterprise Edition. Maybe I'll have some time, beginning of next month. It would be nice to support Rancher Desktop as well. Is only CopyOutputToAsync broken?

[vlaskal]

Yes, support Rancher Desktop will open new areas which was cut by Docker Desktop license.
For me it fails in StartAsync method when client wants to attach to container Task<MultiplexedStream> AttachContainerAsync(...) . I think it is not Rancher Desktop problem but more less of Moby version.
I will look at it and in case I will jump to Docker Desktop for a while and will add WithNetworkAliases function.

[vlaskal]

@HofmeisterAn I tried to create first PR #480 for this feature and also first in this repo. I hope I did everything correctly.