fix: allow for download of kustomize from the makefile

Author: VanillaSpoon

Makefile

@@ -142,9 +142,23 @@ controller-gen: ## Download controller-gen locally if necessary.
 KUSTOMIZE = $(shell pwd)/bin/kustomize
 .PHONY: kustomize
 kustomize: ## Download kustomize locally if necessary.
-	$(call go-get-tool,$(KUSTOMIZE),sigs.k8s.io/kustomize/kustomize/v3@v3.8.7)
+	$(call go-get-tool,$(KUSTOMIZE),sigs.k8s.io/kustomize/kustomize/v4@v4.5.5)
 
 ENVTEST = $(shell pwd)/bin/setup-envtest
 .PHONY: envtest
 envtest: ## Download envtest-setup locally if necessary.
 	$(call go-get-tool,$(ENVTEST),sigs.k8s.io/controller-runtime/tools/setup-envtest@latest)
+
+# go-get-tool will 'go get' any package $2 and install it to $1.
+PROJECT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))
+define go-get-tool
+@[ -f $(1) ] || { \
+set -e ;\
+TMP_DIR=$$(mktemp -d) ;\
+cd $$TMP_DIR ;\
+go mod init tmp ;\
+echo "Downloading $(2)" ;\
+GOBIN=$(PROJECT_DIR)/bin go install $(2) ;\
+rm -rf $$TMP_DIR ;\
+}
+endef

README.md

@@ -29,7 +29,7 @@ Key features:
 - To build locally : `make build`
 - To run locally : `make run`
 ## Image creation
-- To build and release a docker image for controller : `make IMG=quay.io/project-codeflare/instascale:<TAG> docker-build docker-push`
+- To build and release a docker image for controller : `make IMG=quay.io/project-codeflare/instascale:<TAG> image-build image-push`
 - Note that the other contents of the Makefile (as well as the `config` and `bin` dirs) exist for future operator development, and are not currently utilized
 ## Deployment
 - Deploy InstaScale using: `make deploy`