Change: Remove `v` prefix from docker tags #169

Job	Run time
build-2-4-4	34s
build-2-4-12	31s
build-2-4-11	50s
build-2-3-18	34s
build-2-4-6	44s
build-2-5-8	45s
build-2-6-5	40s
test-nogitdiff	17s
update-dockerhub-description	0s
publish-draft-release	0s
update-draft-release	0s
	4m 55s

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