.github: Use devcontainer to build the product #3604

Job	Run time
lint	4m 8s
changed-files	13s
build-shell-ui	0s
unit_tests_ui	0s
unit_tests_shell_ui	0s
build-docs	0s
unit_tests_crd_client_generator	0s
unit_tests_storage_operator	0s
unit_tests_metalk8s_operator	0s
build_integration_container_nginx	0s
unit_tests_lib_alert_tree	0s
unit_tests_salt	0s
build / build-devcontainer / build-and-publish-devcontainer	17s
build / build-docs / docs	2m 29s
build / build-shell-ui / shell-ui	1m 9s
integration_tests_ui	0s
build / build	1m 7s
build / write-final-status	7s
e2e-tests	0s
write-final-status	11s
	9m 41s

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