Update docs about logging configuration (#5976)

* Recommend disabling Apache HTTP client wire logging
* Recommend enabling debug logging only for org.testcontainers

Fixes #4913

Co-authored-by: Kevin Wittek <kiview@users.noreply.github.com>

docs/supported_docker_environment/logging_config.md

@@ -18,5 +18,14 @@ should be included in your classpath to show a reasonable level of log output:
 
     <logger name="org.testcontainers" level="INFO"/>
     <logger name="com.github.dockerjava" level="WARN"/>
+    <logger name="com.github.dockerjava.zerodep.shaded.org.apache.hc.client5.http.wire" level="OFF"/>
 </configuration>
 ```
+
+In order to troubleshoot issues with Testcontainers, increase the logging level of `org.testcontainers` to `DEBUG`:
+
+```xml
+<logger name="org.testcontainers" level="DEBUG"/>
+```
+
+Avoid changing the root logger's level to `DEBUG`, because this turns on debug logging for every package whose level isn't explicitly configured here, resulting in a large amount of log data.