Accelerate via @actions/cache

README.md

@@ -66,6 +66,12 @@ Please note that only the `build-installers` and the `full` flavors are availabl
 
 By default, this Action prints a line whenever 250 items were extracted (this does not work for the `full` flavor, where this Action is silent by default). It can be overridden by setting the input parameter `verbose`; setting it to a number will show updates whenever that many items were extracted. Setting it to `false` will suppress progress updates. Setting it to `true` will print every extracted file (this also works for the `full` flavor).
 
+### Caching
+
+To accelerate this Action, artifacts are cached once downloaded. This can be turned off by setting the input parameter `cache` to `false`.
+
+In practice, caching the `full` artifacts does not provide much of a speed-up. Instead, it slows it down by adding several minutes during with the artifact is cached. Therefore, caching is disabled for the `full` artifacts by default, corresponding to `cache: auto`.
+
 ## Developing _this_ Action
 
 > First, you'll need to have a reasonably modern version of `node` handy, such as Node 12.

__tests__/main.test.ts

@@ -50,7 +50,8 @@ if (process.env.RUN_NETWORK_TESTS !== 'true') {
           INPUT_FLAVOR: 'minimal',
           INPUT_ARCHITECTURE: 'x86_64',
           INPUT_PATH: outputDirectory,
-          INPUT_VERBOSE: '250'
+          INPUT_VERBOSE: '250',
+          INPUT_CACHE: 'true'
         }
       })
     ).toEqual(0)

action.yml

@@ -18,6 +18,10 @@ inputs:
     required: false
     description: 'Whether to log files as they are extracted'
     default: '250'
+  cache:
+    required: false
+    description: 'Use @actions/cache to accelerate this Action'
+    default: 'auto'
 runs:
   using: 'node12'
   main: 'dist/index.js'