Add (make tools) to install (for now only) golangci-lint, use it in Cirrus

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

.cirrus.yml

@@ -52,8 +52,9 @@ validate_task:
         image: '${SKOPEO_CIDEV_CONTAINER_FQIN}'
         cpu: 4
         memory: 8
-    script: |
-        curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.52.2
+    setup_script: |
+        make tools
+    test_script: |
         make validate-local
         make vendor && hack/tree_status.sh
 
@@ -92,7 +93,7 @@ osx_task:
         export PATH=$GOPATH/bin:$PATH
         brew update
         brew install gpgme go go-md2man
-        curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.52.2
+        make tools
     test_script: |
         export PATH=$GOPATH/bin:$PATH
         go version

Makefile

@@ -181,6 +181,11 @@ install-completions: completions
 shell:
 	$(CONTAINER_RUN) bash
 
+tools:
+	if [ ! -x "$(GOBIN)/golangci-lint" ]; then \
+		curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOBIN) v1.52.2 ; \
+	fi
+
 check: validate test-unit test-integration test-system
 
 test-integration: