build: remove usage of NODE_ENV (build is always prod, required devDeps) #1451

Job	Run time
frontend-unit-test / Run Frontend Tests	24s
backend-test / check-img-cache	5s
backend-test / test-img-build	0s
backend-test / run-tests	3m 31s
frontend-build / build-image	1m 42s
frontend-build / scan-image	18s
smoke-test-frontend	58s
backend-build / build-image	1m 47s
backend-build / scan-image	27s
smoke-test-backend	1m 15s
deploy-containers / remote-deploy	1m 19s
	11m 46s

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