Fixing build command

Change-Id: Ic55cae2c7216c7f81171aad72d33efcb34170b9c
diff --git a/Makefile b/Makefile
index 3ff717f..036735f 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@
 .PHONY: build
 build: # @HELP Build the binaries (it runs inside a docker container and output the built code on your local file system)
 	docker build -t ${DOCKER_REGISTRY}${DOCKER_REPOSITORY}bbsim-builder:${DOCKER_TAG} -f build/ci/Dockerfile.builder .
-	docker run --rm -v $(shell pwd):/bbsim ${DOCKER_REGISTRY}${DOCKER_REPOSITORY}bbsim-builder:${DOCKER_TAG} /bin/sh -c "cd /bbsim; make build"
+	docker run --rm -v $(shell pwd):/bbsim ${DOCKER_REGISTRY}${DOCKER_REPOSITORY}bbsim-builder:${DOCKER_TAG} /bin/sh -c "cd /bbsim; make _build"
 
 test: dep protos fmt # @HELP Execute unit tests
 	GO111MODULE=on go test -v -mod vendor ./... -covermode count -coverprofile ./tests/results/go-test-coverage.out 2>&1 | tee ./tests/results/go-test-results.out