Fix test for Docker container #9752

Job	Run time
build (ubuntu-latest)	1m 26s
build (windows-latest)	2m 47s
testing (windows-latest, 3.10, 18.x, 1)	6m 12s
testing (windows-latest, 3.12, 20.x, 2)	4m 26s
testing (ubuntu-latest, 3.10, 22.x, 3)	2m 29s
testing (ubuntu-latest, 3.11, 20.x, 4)	2m 13s
testing (windows-latest, 3.9, 20.x, 1)	5m 19s
testing (ubuntu-latest, 3.10, 18.x, 2)	2m 39s
testing (ubuntu-latest, 3.9, 18.x, 3)	2m 54s
testing (ubuntu-latest, 3.10, 20.x, 4)	2m 54s
testing (ubuntu-latest, 3.11, 20.x, 1)	2m 37s
testing (macos-latest, 3.11, 20.x, 1)	2m 57s
testing (macos-latest, 3.12, 20.x, 2)	1m 45s
testing (macos-latest, 3.10, 20.x, 3)	2m 45s
test-install (windows-latest, 3.11, 18.x)	7m 0s
test-install (ubuntu-latest, 3.9, 18.x)	4m 44s
test-install (ubuntu-latest, 3.11, 18.x)	4m 25s
test-install (ubuntu-latest, 3.11, 20.x)	4m 14s
	1h 3m 46s

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