test: Rework test infrastructure #250

Job	Run time
format_code / fmt	8s
build_dev_container / build_dev_container	1m 22s
integration_test / test	5m 30s
build / build	5m 30s
unit_test / test	4m 56s
lint / lint	4m 51s
build_release_image / build	26s
	22m 43s

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