Nightly build/publish latest docker images #304

Job	Run time
get-build-matrix	2s
build-comps-base / pre-build-image-check	3s
get-image-list / get-image-list	7s
test-example / build-images / pre-build-image-check	4s
test-example / test-helmchart	-1s
build-comps-base / build-images	1s
test-example / build-images / build-images	-1s
test-example / test-example-compose / get-test-case	6s
test-example / test-gmc-pipeline	0s
test-example / test-example-compose / compose-test	0s
build-images	0s
	21s

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