Add debug output to container action to diagnose test output issue #528

Job	Run time
Linting	24s
Test Windows (3.7)	2m 16s
Test Windows (3.10)	1m 2s
Test Windows (3.8)	1m 47s
Test Windows (3.6)	1m 14s
Test Windows (3.11)	1m 0s
Test Windows (3.12)	49s
Test Windows (3.13)	40s
Test Windows (2.7)	59s
Lint Dockerfiles (Dockerfile-fedora28)	8s
Lint Dockerfiles (Dockerfile-fedora34)	10s
Lint Dockerfiles (Dockerfile-fedora30)	7s
Test Windows (3.9)	37s
Lint Dockerfiles (Dockerfile-fedora36)	8s
Lint Dockerfiles (Dockerfile-fedora38)	7s
Test (python3.4)	13s
Lint Dockerfiles (Dockerfile-fuzz)	8s
Test (python3.5)	15s
Lint Dockerfiles (Dockerfile-fedora32)	14s
Test (python3.10)	35s
Test (python3.9)	23s
Test (python2.7)	12s
Test (python3.13)	27s
Lint Dockerfiles (Dockerfile-fedora40)	8s
Test (python3.8)	13s
Test (python3.3)	15s
Test (python3.7)	13s
Test (python3.12)	28s
Test (python3.11)	25s
Test (python3.6)	15s
Test (pypy)	11s
Test (pypy3)	13s
	16m 16s

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