ingress-controller/ci: use asdf for kustomize (#1415)

## Summary
Use `asdf` to manage the local `kustomize`.

## Related issues


## Checklist

- [ ] reference any related issues
- [ ] updated docs
- [ ] updated unit tests
- [ ] updated UPGRADING.md
- [x] add appropriate tag (`improvement` / `bug` / etc)
- [x] ready for review

Author: calebdoxsey

.github/workflows/test.yaml

@@ -15,14 +15,18 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           fetch-depth: 0
+
+      - name: Setup ASDF
+        uses: asdf-vm/actions/install@b7bcd026f18772e44fe1026d729e1611cc435d47
+
       - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c
         with:
           go-version-file: .tool-versions
+
       - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: "3.x"
-      - name: install kustomize
-        run: make kustomize
+
       - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd
         with:
           extra_args: --show-diff-on-failure --from-ref ${{

.tool-versions

@@ -1,3 +1,4 @@
 golangci-lint 2.12.2
 golang 1.26.3
 nodejs 24.15.0
+kustomize 5.8.1

Makefile

@@ -154,25 +154,25 @@ snapshot:
 ##@ Deployment
 
 .PHONY: install
-install: generated kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
+install: generated ## Install CRDs into the K8s cluster specified in ~/.kube/config.
 	@echo "==> $@"
-	@$(KUSTOMIZE) build config/crd | kubectl apply -f -
+	@kustomize build config/crd | kubectl apply -f -
 
 .PHONY: uninstall
-uninstall: generated kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config.
+uninstall: generated ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config.
 	@echo "==> $@"
-	@$(KUSTOMIZE) build config/crd | kubectl delete -f -
+	@kustomize build config/crd | kubectl delete -f -
 
 .PHONY: deploy
-deploy: generated kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/config.
+deploy: generated ## Deploy controller to the K8s cluster specified in ~/.kube/config.
 	@echo "==> $@"
-	@cd config/manager && $(KUSTOMIZE) edit set image controller=${IMG}
-	@$(KUSTOMIZE) build config/default | kubectl apply -f -
+	@cd config/manager && kustomize edit set image controller=${IMG}
+	@kustomize build config/default | kubectl apply -f -
 
 .PHONY: undeploy
 undeploy: ## Undeploy controller from the K8s cluster specified in ~/.kube/config.
 	@echo "==> $@"
-	@$(KUSTOMIZE) build config/default | kubectl delete -f -
+	@kustomize build config/default | kubectl delete -f -
 
 ## Location to install dependencies to
 LOCALBIN ?= $(shell pwd)/bin
@@ -190,23 +190,10 @@ clean:
 	@chmod -Rf u+w internal/ui || true
 	@rm -rf internal/ui
 
-KUSTOMIZE ?= $(LOCALBIN)/kustomize
-
-
-KUSTOMIZE_INSTALL_SCRIPT ?= "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh"
-.PHONY: kustomize
-kustomize: $(KUSTOMIZE)  ## Download kustomize locally if necessary.
-	@echo "==> $@"
-
-$(KUSTOMIZE): $(LOCALBIN)
-	@echo "==> $@"
-	@rm -rf $(KUSTOMIZE)
-	@curl -s $(KUSTOMIZE_INSTALL_SCRIPT) | bash -s -- $(subst v,,$(KUSTOMIZE_VERSION)) $(LOCALBIN)
-
 .PHONY: deployment
-deployment: kustomize
+deployment:
 	@echo "==> $@"
-	@$(KUSTOMIZE) build config/default > deployment.yaml
+	@kustomize build config/default > deployment.yaml
 
 .PHONY: docs
 docs: generated
@@ -225,7 +212,7 @@ dev-install:
 	@echo "deleting pods..."
 	#@kubectl delete --force --selector app.kubernetes.io/name=pomerium pods || true
 	@kubectl delete deployment/pomerium -n pomerium --wait || true
-	@$(KUSTOMIZE) build config/dev/local --load-restrictor LoadRestrictionsNone | kubectl apply --filename -
+	@kustomize build config/dev/local --load-restrictor LoadRestrictionsNone | kubectl apply --filename -
 
 .PHONY: dev-logs
 dev-logs:
@@ -234,7 +221,7 @@ dev-logs:
 .PHONY: dev-gen-secrets
 dev-gen-secrets:
 	@echo "==> $@"
-	@$(KUSTOMIZE) build config/dev/gen_secrets | kubectl apply --filename -
+	@kustomize build config/dev/gen_secrets | kubectl apply --filename -
 
 .PHONY: dev-build
 dev-build:

scripts/update-dependencies

@@ -32,6 +32,8 @@ update-tools() {
 	asdf set golang latest:1.26
 	asdf install golangci-lint latest:2
 	asdf set golangci-lint latest:2
+	asdf install kustomize latest
+	asdf set kustomize latest
 
 	popd
 }