fix: prevent double-build when pushing llmisvc-controller image (kserve#5207)

Signed-off-by: Edgar Hernández <23639005+israel-hdez@users.noreply.github.com>

Author: israel-hdez

Makefile

@@ -451,10 +451,10 @@ docker-push:
 	docker push ${KO_DOCKER_REPO}/${CONTROLLER_IMG}
 
 docker-build-llmisvc:
-	${ENGINE} buildx build ${ARCH} --build-arg GOTAGS=${GOTAGS} -t ${KO_DOCKER_REPO}/${LLMISVC_CONTROLLER_IMG} -f llmisvc-controller.Dockerfile .
+	${ENGINE} buildx build ${ARCH} --load --build-arg GOTAGS=${GOTAGS} -t ${KO_DOCKER_REPO}/${LLMISVC_CONTROLLER_IMG} -f llmisvc-controller.Dockerfile .
 
 docker-push-llmisvc: docker-build-llmisvc
-	${ENGINE} buildx build ${ARCH} --build-arg GOTAGS=${GOTAGS} --push -t ${KO_DOCKER_REPO}/${LLMISVC_CONTROLLER_IMG} -f llmisvc-controller.Dockerfile .
+	${ENGINE} push ${KO_DOCKER_REPO}/${LLMISVC_CONTROLLER_IMG}
 
 docker-build-localmodel:
 	${ENGINE} buildx build ${ARCH} -t ${KO_DOCKER_REPO}/${LOCALMODEL_CONTROLLER_IMG} -f localmodel.Dockerfile .