Merge pull request #1569 from SaschaSchwarze0/sascha-correct-dockerfi… #3262

Job	Run time
e2e (v1.27.11)	36m 0s
unit	2m 53s
e2e (v1.29.2)	19m 59s
integration (v1.27.11)	20m 44s
integration (v1.29.2)	19m 47s
test-docker-build (base)	33s
test-docker-build (git)	1m 6s
test-docker-build (image-processing)	46s
test-docker-build (waiter)	34s
	1h 42m 22s

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