Add Docker build tests and manual image release automation #99

Job	Run time
unit_tests (3.9)	3m 18s
unit_tests (3.10)	1m 47s
unit_tests (3.11)	2m 13s
docker_build_tests / docker_build_tests	1m 39s
py_build_tests / py_build_tests	10s
py_build_tests / relative_path_tests	6s
	9m 13s

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