Merge pull request #6231 from sbueringer/pr-fix-image-push

🐛 build: fix image push job by disabling CGO when building kustomize

Author: k8s-ci-robot

Makefile

@@ -807,7 +807,7 @@ $(ENVSUBST): # Build gotestsum from tools folder.
 	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(ENVSUBST_PKG) $(ENVSUBST_BIN) $(ENVSUBST_VER)
 
 $(KUSTOMIZE): # Build kustomize from tools folder.
-	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(KUSTOMIZE_PKG) $(KUSTOMIZE_BIN) $(KUSTOMIZE_VER)
+	CGO_ENABLED=0 GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(KUSTOMIZE_PKG) $(KUSTOMIZE_BIN) $(KUSTOMIZE_VER)
 
 $(SETUP_ENVTEST): # Build setup-envtest from tools folder.
 	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(SETUP_ENVTEST_PKG) $(SETUP_ENVTEST_BIN) $(SETUP_ENVTEST_VER)