[Bug]: HttpWaitStrategy removes line breaks in http response body before responsePredicate invocation

Module

Core

Testcontainers version

1.18.3

Using the latest Testcontainers version?

Yes

Host OS

Linux

Host Arch

x86

Docker version

Client:
 Version:           20.10.21
 API version:       1.41
 Go version:        go1.18.1
 Git commit:        20.10.21-0ubuntu1~22.04.3
 Built:             Thu Apr 27 05:57:17 2023
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server:
 Engine:
  Version:          20.10.21
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.18.1
  Git commit:       20.10.21-0ubuntu1~22.04.3
  Built:            Thu Apr 27 05:37:25 2023
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.12-0ubuntu1~22.04.3
  GitCommit:        
 runc:
  Version:          1.1.4-0ubuntu1~22.04.3
  GitCommit:        
 docker-init:
  Version:          0.19.0
  GitCommit:

What happened?

for some reason, the HttpWaitStrategy reads the response line by line, but does not save the line break characters. In some cases it is really bad, for example, parsing the prometheus metric of springboot application becomes a nightmare.

from org.testcontainers.containers.wait.strategy.HttpWaitStrategy

   private String getResponseBody(HttpURLConnection connection) throws IOException {
        BufferedReader reader;
        if (200 <= connection.getResponseCode() && connection.getResponseCode() <= 299) {
            reader = new BufferedReader(new InputStreamReader((connection.getInputStream())));
        } else {
            reader = new BufferedReader(new InputStreamReader((connection.getErrorStream())));
        }

        StringBuilder builder = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            builder.append(line);  // THIS ROW!!!!!!!
        }
        return builder.toString();
    }

Relevant log output

No response

Additional Information

No response

Beginne in org.testcontainers.containers.wait.strategy.HttpWaitStrategy und konzentriere dich auf getResponseBody und den Aufruf von responsePredicate. Reproduziere das Verhalten mit einer mehrzeiligen HTTP response und überprüfe anschließend, dass responsePredicate die Zeilenumbrüche erhält und dass die relevanten Core wait-strategy tests erfolgreich sind.