chore(server,worker): optimize Dockerfile #2988

Job	Run time
prepare	9s
ci-geo	0s
ci-extension	0s
ci-tiles	0s
ci-tools	0s
ci-server / ci-server-lint	21s
ci-server / ci-server-test	1m 7s
ci-worker / ci-worker-lint	2m 42s
ci-worker / ci-worker-test	18s
build-geo	0s
build-tiles	0s
deploy-extension-dev	0s
deploy-geo-dev	0s
deploy-tiles-dev	0s
build-server / Build and push Docker image	22s
deploy-server-dev	0s
ci	1s
build-worker / Build and push Docker image	53s
deploy-worker-dev	0s
	5m 53s

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