Fix validation step to Bitbucket pipeline #1990

Job	Run time
dspace-cris-angular-dependencies / docker-build (linux/amd64, false)	1m 24s
dspace-cris-angular-dependencies / docker-build (linux/arm64, false)	5m 33s
dspace-cris-angular-dependencies / docker-build_manifest	21s
dspace-cris-angular-dependencies / docker-copy_to_dockerhub	7s
dspace-angular-dist	0s
dspace-angular	0s
	7m 25s

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