What method can be used to enable debugging for a Docker container?

Enabling debugging for a Docker container is primarily accomplished by running the container in debug mode. This method allows the container to execute in an environment that supports detailed logging and error reporting, making it easier for developers to identify issues. Running a container in debug mode typically includes starting it with flags or options that provide additional information about the execution context and any problems that may arise, such as increased verbosity in log outputs.

While there are other methods mentioned that can offer insights into the container's state or configuration, they do not directly enable debugging in the same way. For instance, setting a debug flag in the Dockerfile might influence the build process but wouldn't affect how the container runs and debugs in real-time. The 'docker inspect' command provides detailed information about containers, images, and volumes, but it is more for inspection than for live debugging. Similarly, viewing the metrics of the container can yield performance-related insights but does not provide the context needed to troubleshoot code or operational issues directly within the container's runtime.