Docker image tweaks #912

Job	Run time
lint	36s
build	34s
cleanup_buckets	37s
doc	57s
test-docker	7m 0s
test-linux-bundle	6m 49s
test-windows-bundle (windows-2019)	10m 24s
test (ubuntu-latest, 3.7)	5m 32s
test-windows-bundle (windows-latest)	9m 57s
test (ubuntu-latest, 3.8)	46s
test (ubuntu-latest, 3.9)	53s
test (ubuntu-latest, 3.10)	55s
test (ubuntu-latest, 3.11)	5m 24s
test (ubuntu-latest, 3.12)	57s
test (ubuntu-latest, pypy-3.10-nightly)	9m 17s
test (macos-latest, 3.7)	7m 20s
test (macos-latest, 3.8)	59s
test (macos-latest, 3.9)	1m 17s
test (macos-latest, 3.10)	1m 25s
test (macos-latest, 3.11)	6m 35s
test (macos-latest, 3.12)	1m 9s
test (windows-latest, 3.7)	7m 7s
test (windows-latest, 3.8)	1m 49s
test (windows-latest, 3.9)	2m 3s
test (windows-latest, 3.10)	1m 23s
test (windows-latest, 3.11)	6m 52s
test (windows-latest, 3.12)	1m 30s
	1h 40m 7s

Provide feedback