build: remove usage of NODE_ENV (build is always prod, required devDeps) #1450

Job	Run time
backend-test / check-img-cache	12s
frontend-unit-test / Run Frontend Tests	22s
backend-test / test-img-build	0s
backend-test / run-tests	3m 30s
frontend-build / build-image	1m 27s
frontend-build / scan-image	32s
smoke-test-frontend	54s
backend-build / build-image	1m 47s
backend-build / scan-image	17s
smoke-test-backend	1m 20s
deploy-containers / remote-deploy	57s
	11m 18s

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