Show service container logs on teardown

[karagog]

This will export the service container logs at the end of a GitHub action right before they're torn down. This information can be very useful for debugging, and it's a pain to manually export logs on an as-needed basis.

[karagog]

Note that I think this will also print the logs for the container that's running your current job action (if you're running in a container), which may be redundant b/c I think that log is already printed in a different place. But I'm not sure how to isolate just the service container logs, so I just printed all container logs.

[TingluoHuang]

@karagog you can filter job container out with if(!container.IsJobContainer){ run docker log}.

[karagog]

@TingluoHuang Done.