feat: add dynamic port resolution for WaitForHttp

[wundii]

Hi,

WaitForHttp is runs outside the container and cannot access the internal port if it differs from the external port. With this solution, the external dynamic port is resolved via the specified internal port.

integration + cs + phpstan was executed successfully before the PR

[rw4lll]

Hi @wundii,

thank you for the PR. Could you please take a look at this PR?
As far as I remember, we introduced something similar in one of the latest releases. Can it be the duplicate?

[wundii]

Hi @rw4lll,

Thanks for the info. I've given it some more thought. If you don't pass a port to WaitForHttp, it works for the first port. In our case, we want to refer to a specific port in WaitForHttp, as there may be more than one. In this case, the resolvePort method no longer works. I have revised it again and hope that it is now easier to read for our problem. I have also added another test to check the firstMappedPort and MappedPort for the two variants with WaitForHttp.

[wundii]

Hi @rw4lll and @shyim,

Would it be possible to review this PR so that we can remove our workaround?