Standalone mode

.github/workflows/ci.yml

@@ -30,21 +30,9 @@ jobs:
         uses: actions/checkout@v3
       -
         name: Set up Docker Buildx
-        id: buildx
         uses: ./
         with:
           version: ${{ matrix.buildx-version }}
-      -
-        name: Inspect builder
-        run: |
-          echo "Name:      ${{ steps.buildx.outputs.name }}"
-          echo "Endpoint:  ${{ steps.buildx.outputs.endpoint }}"
-          echo "Status:    ${{ steps.buildx.outputs.status }}"
-          echo "Flags:     ${{ steps.buildx.outputs.flags }}"
-          echo "Platforms: ${{ steps.buildx.outputs.platforms }}"
-      -
-        name: Dump context
-        uses: crazy-max/ghaction-dump-context@v1
 
   multi:
     runs-on: ubuntu-latest
@@ -54,28 +42,10 @@ jobs:
         uses: actions/checkout@v3
       -
         name: Set up Docker Buildx 1
-        id: buildx1
         uses: ./
-      -
-        name: Inspect builder 1
-        run: |
-          echo "Name:      ${{ steps.buildx1.outputs.name }}"
-          echo "Endpoint:  ${{ steps.buildx1.outputs.endpoint }}"
-          echo "Status:    ${{ steps.buildx1.outputs.status }}"
-          echo "Flags:     ${{ steps.buildx1.outputs.flags }}"
-          echo "Platforms: ${{ steps.buildx1.outputs.platforms }}"
       -
         name: Set up Docker Buildx 2
-        id: buildx2
         uses: ./
-      -
-        name: Inspect builder 2
-        run: |
-          echo "Name:      ${{ steps.buildx2.outputs.name }}"
-          echo "Endpoint:  ${{ steps.buildx2.outputs.endpoint }}"
-          echo "Status:    ${{ steps.buildx2.outputs.status }}"
-          echo "Flags:     ${{ steps.buildx2.outputs.flags }}"
-          echo "Platforms: ${{ steps.buildx2.outputs.platforms }}"
 
   error:
     runs-on: ubuntu-latest
@@ -328,18 +298,9 @@ jobs:
           platforms: ${{ matrix.qemu-platforms }}
       -
         name: Set up Docker Buildx
-        id: buildx
         uses: ./
         with:
           version: ${{ matrix.buildx-version }}
-      -
-        name: Inspect builder
-        run: |
-          echo "Name:      ${{ steps.buildx.outputs.name }}"
-          echo "Endpoint:  ${{ steps.buildx.outputs.endpoint }}"
-          echo "Status:    ${{ steps.buildx.outputs.status }}"
-          echo "Flags:     ${{ steps.buildx.outputs.flags }}"
-          echo "Platforms: ${{ steps.buildx.outputs.platforms }}"
 
   build-ref:
     runs-on: ubuntu-latest
@@ -360,10 +321,6 @@ jobs:
         uses: ./
         with:
           version: https://github.com/docker/buildx.git#${{ matrix.ref }}
-      -
-        name: Check version
-        run: |
-          docker buildx version
       -
         name: Create Dockerfile
         run: |
@@ -375,3 +332,100 @@ jobs:
         uses: docker/build-push-action@master
         with:
           context: .
+
+  standalone:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        buildx-version:
+          - latest
+          - ""
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Uninstall docker cli
+        run: |
+          sudo apt-get purge -y moby-cli moby-buildx
+      -
+        name: Set up Docker Buildx
+        uses: ./
+        with:
+          version: ${{ matrix.buildx-version }}
+      -
+        name: Check available in path
+        if: matrix.standalone
+        run: |
+          buildx version
+
+  standalone-install-error:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Uninstall docker cli
+        run: |
+          sudo apt-get purge -y moby-cli moby-buildx
+      -
+        name: Set up Docker Buildx
+        id: buildx
+        continue-on-error: true
+        uses: ./
+        with:
+          install: true
+      -
+        name: Check
+        run: |
+          echo "${{ toJson(steps.buildx) }}"
+          if [ "${{ steps.buildx.outcome }}" != "failure" ] || [ "${{ steps.buildx.conclusion }}" != "success" ]; then
+            echo "::error::Should have failed"
+            exit 1
+          fi
+
+  standalone-kubernetes:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Uninstall moby
+        run: |
+          sudo apt-get purge -y moby-engine moby-cli moby-buildx
+      -
+        name: Setup k8s cluster
+        run: |
+          set -x
+          sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
+          echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
+          sudo apt-get update
+          sudo apt-get install -y kubelet kubeadm kubectl
+          sudo swapoff -a
+          sudo kubeadm init --cri-socket /run/containerd/containerd.sock
+          mkdir -p $HOME/.kube/
+          sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
+          sudo chown $USER $HOME/.kube/config
+          kubectl taint nodes --all node-role.kubernetes.io/master-
+          kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
+          kubectl wait --for=condition=ready --timeout=30s node --all
+          kubectl get nodes -o wide
+      -
+        name: Create Dockerfile
+        run: |
+          cat > ./Dockerfile <<EOL
+          FROM alpine
+          RUN echo hello
+          EOL
+      -
+        name: Set up Docker Buildx
+        uses: ./
+        with:
+          driver: kubernetes
+      -
+        name: Build
+        run: |
+          buildx build .

README.md

@@ -24,6 +24,7 @@ ___
   * [BuildKit daemon configuration](#buildkit-daemon-configuration)
     * [Registry mirror](#registry-mirror)
     * [Max parallelism](#max-parallelism)
+  * [Standalone mode](#standalone-mode)
 * [Customizing](#customizing)
   * [inputs](#inputs)
   * [outputs](#outputs)
@@ -180,6 +181,33 @@ jobs:
           config: .github/buildkitd.toml
 ```
 
+### Standalone mode
+
+If you don't have the Docker CLI installed on the GitHub Runner, buildx binary
+is invoked directly, instead of calling it as a docker plugin. This can be
+useful if you want to use the `kubernetes` driver in your self-hosted runner:
+
+```yaml
+name: ci
+
+on:
+  push:
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          driver: kubernetes
+      -
+        name: Build
+        run: |
+          buildx build .
+```
+
 ## Customizing
 
 ### inputs
@@ -195,10 +223,10 @@ Following inputs can be used as `step.with` keys
 | `install`          | Bool    | Sets up `docker build` command as an alias to `docker buildx` (default `false`) |
 | `use`              | Bool    | Switch to this builder instance (default `true`) |
 | `endpoint`         | String  | [Optional address for docker socket](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#description) or context from `docker context ls` |
-| `config`           | String  | [BuildKit config file](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#config) |
-| `config-inline`    | String  | Same as `config` but inline |
+| `config`¹          | String  | [BuildKit config file](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#config) |
+| `config-inline`¹   | String  | Same as `config` but inline |
 
-> `config` and `config-inline` are mutually exclusive.
+> * ¹ `config` and `config-inline` are mutually exclusive
 
 > `CSV` type must be a newline-delimited string
 > ```yaml

__tests__/buildx.test.ts

@@ -32,6 +32,17 @@ describe('isAvailable', () => {
   });
 });
 
+describe('isAvailable standalone', () => {
+  const execSpy = jest.spyOn(exec, 'getExecOutput');
+  buildx.isAvailable(true);
+
+  // eslint-disable-next-line jest/no-standalone-expect
+  expect(execSpy).toHaveBeenCalledWith(`buildx`, [], {
+    silent: true,
+    ignoreReturnCode: true
+  });
+});
+
 describe('getVersion', () => {
   it('valid', async () => {
     const version = await buildx.getVersion();
@@ -75,29 +86,32 @@ describe('build', () => {
 
   // eslint-disable-next-line jest/no-disabled-tests
   it.skip('builds refs/pull/648/head', async () => {
-    const buildxBin = await buildx.build('https://github.com/docker/buildx.git#refs/pull/648/head', tmpDir);
+    const buildxBin = await buildx.build('https://github.com/docker/buildx.git#refs/pull/648/head', tmpDir, false);
     expect(fs.existsSync(buildxBin)).toBe(true);
   }, 100000);
 
   // eslint-disable-next-line jest/no-disabled-tests
   it.skip('builds 67bd6f4dc82a9cd96f34133dab3f6f7af803bb14', async () => {
-    const buildxBin = await buildx.build('https://github.com/docker/buildx.git#67bd6f4dc82a9cd96f34133dab3f6f7af803bb14', tmpDir);
+    const buildxBin = await buildx.build('https://github.com/docker/buildx.git#67bd6f4dc82a9cd96f34133dab3f6f7af803bb14', tmpDir, false);
     expect(fs.existsSync(buildxBin)).toBe(true);
   }, 100000);
 });
 
 describe('install', () => {
   const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'setup-buildx-'));
-
-  it('acquires v0.4.1 version of buildx', async () => {
-    const buildxBin = await buildx.install('v0.4.1', tmpDir);
-    expect(fs.existsSync(buildxBin)).toBe(true);
-  }, 100000);
-
-  it('acquires latest version of buildx', async () => {
-    const buildxBin = await buildx.install('latest', tmpDir);
-    expect(fs.existsSync(buildxBin)).toBe(true);
-  }, 100000);
+  test.each([
+    ['v0.4.1', false],
+    ['latest', false],
+    ['v0.4.1', true],
+    ['latest', true]
+  ])(
+    'acquires %p of buildx (standalone: %p)',
+    async (version, standalone) => {
+      const buildxBin = await buildx.install(version, tmpDir, standalone);
+      expect(fs.existsSync(buildxBin)).toBe(true);
+    },
+    100000
+  );
 });
 
 describe('getConfig', () => {

__tests__/docker.test.ts

@@ -0,0 +1,16 @@
+import {describe, expect, it, jest} from '@jest/globals';
+import * as docker from '../src/docker';
+import * as exec from '@actions/exec';
+
+describe('isAvailable', () => {
+  it('cli', () => {
+    const execSpy = jest.spyOn(exec, 'getExecOutput');
+    docker.isAvailable();
+
+    // eslint-disable-next-line jest/no-standalone-expect
+    expect(execSpy).toHaveBeenCalledWith(`docker`, undefined, {
+      silent: true,
+      ignoreReturnCode: true
+    });
+  });
+});