Allow sampler to take in images #4284

Job	Run time
Build tunix package / Build Tunix wheel	10s
tunix_cpu_unit_tests / run	1m 16s
tunix_tpu_unit_tests / run_dev	9m 52s
tunix_tpu_unit_tests / run_prod	1s
Notify failed build	3s
	11m 22s

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