fix: configurable runner tool cache + disabled by default

Runner tool cache can fill up the disk space (e.g. for LLVM), so it is disabled by default

action.yml

@@ -3,6 +3,9 @@ description: "Install all the tools required for building and testing C++/C proj
 author: "Amin Yahyaabadi"
 
 inputs:
+  cache-tools:
+    description: "If should cache the installed tools? (Default: false)"
+    required: false
   compiler:
     description: "The compiler to use and its optional version separated by - e.g. llvm-13.0.0"
     required: false

src/cmake/__tests__/cmake.test.ts

@@ -9,6 +9,7 @@ describe("setup-cmake", () => {
   let directory: string
   beforeAll(async () => {
     directory = await setupTmpDir("cmake")
+    process.env.CACHE_TOOLS = "true"
   })
 
   it("should setup CMake", async () => {

src/ninja/__tests__/ninja.test.ts

@@ -14,6 +14,7 @@ describe("setup-ninja", () => {
   let directory: string
   beforeEach(async () => {
     directory = await setupTmpDir("ninja")
+    process.env.CACHE_TOOLS = "true"
   })
 
   it("should setup Ninja", async () => {

src/task/__tests__/task.test.ts

@@ -8,6 +8,7 @@ describe("setup-task", () => {
   let directory: string
   beforeAll(async () => {
     directory = await setupTmpDir("task")
+    process.env.CACHE_TOOLS = "true"
   })
 
   it("should setup task", async () => {

src/utils/setup/setupBin.ts

@@ -7,6 +7,7 @@ import { tmpdir } from "os"
 import { GITHUB_ACTIONS } from "ci-info"
 import { pathExists } from "path-exists"
 import retry from "retry-as-promised"
+import { maybeGetInput } from "../../cli-options"
 import { hasDnf } from "../env/hasDnf"
 import { isArch } from "../env/isArch"
 import { isUbuntu } from "../env/isUbuntu"
@@ -132,7 +133,9 @@ export async function setupBin(
 
   // check if inside Github Actions. If so, cache the installation
   if (GITHUB_ACTIONS && typeof process.env.RUNNER_TOOL_CACHE === "string") {
-    await cacheDir(setupDir, name, version)
+    if (maybeGetInput("cache-tools") === "true" || process.env.CACHE_TOOLS === "true") {
+      await cacheDir(setupDir, name, version)
+    }
   }
 
   return { installDir, binDir }