Check if buildx available on runner

Use default buildx on runner

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

setup-buildx/README.md

@@ -88,13 +88,13 @@ jobs:
 
 Following inputs can be used as `step.with` keys
 
-| Name             | Type    | Default             | Description                        |
-|------------------|---------|---------------------|------------------------------------|
-| `buildx-version` | String  | `latest`            | [Buildx](https://github.com/docker/buildx) version. e.g. `v0.3.0` |
-| `driver`         | String  | `docker-container`  | Sets the [builder driver](https://github.com/docker/buildx#--driver-driver) to be used. |
-| `driver-opt`     | String  |                     | Passes additional [driver-specific options](https://github.com/docker/buildx#--driver-opt-options). e.g. `image=moby/buildkit:master` |
-| `install`        | Bool    | `false`             | Sets up `docker build` command as an alias to `docker buildx` |
-| `use`            | Bool    | `true`              | Switch to this builder instance |
+| Name             | Type    | Default                           | Description                        |
+|------------------|---------|-----------------------------------|------------------------------------|
+| `buildx-version` | String  | _the one installed on the runner_ | [Buildx](https://github.com/docker/buildx) version. e.g. `v0.3.0`, `latest` |
+| `driver`         | String  | `docker-container`                | Sets the [builder driver](https://github.com/docker/buildx#--driver-driver) to be used. |
+| `driver-opt`     | String  |                                   | Passes additional [driver-specific options](https://github.com/docker/buildx#--driver-opt-options). e.g. `image=moby/buildkit:master` |
+| `install`        | Bool    | `false`                           | Sets up `docker build` command as an alias to `docker buildx` |
+| `use`            | Bool    | `true`                            | Switch to this builder instance |
 
 ### outputs
 

setup-buildx/__tests__/buildx.test.ts

@@ -0,0 +1,24 @@
+import fs = require('fs');
+import * as buildx from '../src/buildx';
+import * as path from 'path';
+import * as os from 'os';
+
+const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'setup-buildx-'));
+
+describe('buildx', () => {
+  it('is available', async () => {
+    expect(await buildx.isAvailable()).toBe(true);
+  }, 100000);
+
+  it('acquires v0.2.2 version of buildx', async () => {
+    const buildxBin = await buildx.install('v0.2.2', tmpDir);
+    console.log(buildxBin);
+    expect(fs.existsSync(buildxBin)).toBe(true);
+  }, 100000);
+
+  it('acquires latest version of buildx', async () => {
+    const buildxBin = await buildx.install('latest', tmpDir);
+    console.log(buildxBin);
+    expect(fs.existsSync(buildxBin)).toBe(true);
+  }, 100000);
+});

setup-buildx/action.yml

@@ -9,7 +9,6 @@ branding:
 inputs:
   buildx-version:
     description: 'Buildx version. e.g. v0.3.0'
-    default: 'latest'
     required: false
   driver:
     description: 'Sets the builder driver to be used'