fix: Fix integration operator push (feast-dev#4924)

fix integration build/push for images

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

Author: tchughesiv

infra/feast-operator/Makefile

@@ -142,7 +142,7 @@ run: manifests generate fmt vet ## Run a controller from your host.
 # More info: https://docs.docker.com/develop/develop-images/build_enhancements/
 .PHONY: docker-build
 docker-build: ## Build docker image with the manager.
-	$(CONTAINER_TOOL) build -t ${IMG} .
+	$(CONTAINER_TOOL) build -t ${IMG} --load .
 
 ## Build feast docker image.
 .PHONY: feast-ci-dev-docker-img
@@ -167,7 +167,7 @@ docker-buildx: ## Build and push docker image for the manager for cross-platform
 	sed -e '1 s/\(^FROM\)/FROM --platform=\$$\{BUILDPLATFORM\}/; t' -e ' 1,// s//FROM --platform=\$$\{BUILDPLATFORM\}/' Dockerfile > Dockerfile.cross
 	- $(CONTAINER_TOOL) buildx create --name project-v3-builder
 	$(CONTAINER_TOOL) buildx use project-v3-builder
-	- $(CONTAINER_TOOL) buildx build --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross .
+	- $(CONTAINER_TOOL) buildx build --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross --load .
 	- $(CONTAINER_TOOL) buildx rm project-v3-builder
 	rm Dockerfile.cross