add more tests for docker hub and fix cloudflare R2 downloads #260

Job	Run time
integration_test_matrix (macos-13)	12m 0s
tidy_and_test_matrix (macos-13)	5m 44s
integration_test_matrix (macos-15)	7m 33s
tidy_and_test_matrix (macos-15)	5m 17s
integration_test_matrix (ubuntu-22.04)	8m 6s
tidy_and_test_matrix (ubuntu-22.04)	4m 40s
integration_test_matrix (windows-2025)	11m 45s
tidy_and_test_matrix (windows-2025)	7m 49s
all_ci_tests	11s
	1h 3m 5s

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