Update DocSum README and environment configuration (#1917) #16

Job	Run time
job1 / Get-test-matrix	5s
image-build (DocSum, gaudi) / build-images / pre-build-image-check	2s
image-build (DocSum, gaudi) / test-helmchart	0s
image-build (DocSum, gaudi) / build-images / build-images	1d 0h 0m 0s
image-build (DocSum, gaudi) / test-gmc-pipeline	0s
image-build (DocSum, gaudi) / test-example-compose	0s
	1d 0h 0m 7s

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