Standalone mode support

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

.github/workflows/ci.yml

@@ -814,3 +814,62 @@ jobs:
         name: Inspect
         run: |
           docker buildx imagetools inspect localhost:5000/name/app:1.0.0
+
+  standalone:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Uninstall moby cli
+        run: |
+          sudo apt-get purge -y moby-cli moby-buildx
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@master # TODO: use v1 when standalone released
+      -
+        name: Build
+        uses: ./
+        with:
+          context: ./test
+          file: ./test/Dockerfile
+
+  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: Set up Docker Buildx
+        uses: docker/setup-buildx-action@master # TODO: use v1 when standalone released
+        with:
+          driver: kubernetes
+      -
+        name: Build
+        uses: ./
+        with:
+          context: ./test
+          file: ./test/Dockerfile

__tests__/buildx.test.ts

@@ -78,6 +78,17 @@ 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();

__tests__/context.test.ts

@@ -151,7 +151,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
         '.'
@@ -168,7 +167,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--build-arg', 'MY_ARG=val1,val2,val3',
         '--build-arg', 'ARG=val',
@@ -187,7 +185,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
         '--tag', 'name/app:7.4',
@@ -208,7 +205,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--label', 'org.opencontainers.image.title=buildkit',
         '--label', 'org.opencontainers.image.description=concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit',
@@ -228,7 +224,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--platform', 'linux/amd64,linux/arm64',
         '.'
@@ -245,7 +240,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
         '.'
@@ -263,7 +257,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
         '--secret', 'id=GIT_AUTH_TOKEN,src=/tmp/.docker-build-push-jest/.tmpname-jest',
@@ -282,7 +275,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--output', '.',
         '--secret', 'id=GIT_AUTH_TOKEN,src=/tmp/.docker-build-push-jest/.tmpname-jest',
@@ -305,7 +297,6 @@ describe('getArgs', () => {
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--file', './test/Dockerfile',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
@@ -340,7 +331,6 @@ ccc"`],
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--file', './test/Dockerfile',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
@@ -378,7 +368,6 @@ ccc`],
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--file', './test/Dockerfile',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
@@ -408,7 +397,6 @@ ccc`],
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--file', './test/Dockerfile',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
@@ -432,7 +420,6 @@ ccc`],
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--label', 'org.opencontainers.image.title=filter_results_top_n',
         '--label', 'org.opencontainers.image.description=Reference implementation of operation "filter results (top-n)"',
@@ -455,7 +442,6 @@ ccc`],
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--add-host', 'docker:10.180.0.1',
         '--add-host', 'foo:10.0.0.1',
@@ -484,7 +470,6 @@ nproc=3`],
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--add-host', 'docker:10.180.0.1',
         '--add-host', 'foo:10.0.0.1',
@@ -509,7 +494,6 @@ nproc=3`],
         ['pull', 'false'],
       ]),
       [
-        'buildx',
         'build',
         '--iidfile', '/tmp/.docker-build-push-jest/iidfile',
         '--metadata-file', '/tmp/.docker-build-push-jest/metadata-file',

__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
+    });
+  });
+});

src/buildx.ts

@@ -107,9 +107,10 @@ export function hasGitAuthToken(secrets: string[]): boolean {
   return false;
 }
 
-export async function isAvailable(): Promise<boolean> {
+export async function isAvailable(standalone?: boolean): Promise<boolean> {
+  const cmd = getCommand([], standalone);
   return await exec
-    .getExecOutput('docker', ['buildx'], {
+    .getExecOutput(cmd.command, cmd.args, {
       ignoreReturnCode: true,
       silent: true
     })
@@ -118,12 +119,17 @@ export async function isAvailable(): Promise<boolean> {
         return false;
       }
       return res.exitCode == 0;
+    })
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    .catch(error => {
+      return false;
     });
 }
 
-export async function getVersion(): Promise<string> {
+export async function getVersion(standalone?: boolean): Promise<string> {
+  const cmd = getCommand(['version'], standalone);
   return await exec
-    .getExecOutput('docker', ['buildx', 'version'], {
+    .getExecOutput(cmd.command, cmd.args, {
       ignoreReturnCode: true,
       silent: true
     })
@@ -146,3 +152,10 @@ export function parseVersion(stdout: string): string {
 export function satisfies(version: string, range: string): boolean {
   return semver.satisfies(version, range) || /^[0-9a-f]{7}$/.exec(version) !== null;
 }
+
+export function getCommand(args: Array<string>, standalone?: boolean) {
+  return {
+    command: standalone ? 'buildx' : 'docker',
+    args: standalone ? args : ['buildx', ...args]
+  };
+}

src/context.ts

@@ -101,7 +101,6 @@ export async function getInputs(defaultContext: string): Promise<Inputs> {
 export async function getArgs(inputs: Inputs, defaultContext: string, buildxVersion: string): Promise<Array<string>> {
   // prettier-ignore
   return [
-    'buildx',
     ...await getBuildArgs(inputs, defaultContext, buildxVersion),
     ...await getCommonArgs(inputs, buildxVersion),
     handlebars.compile(inputs.context)({defaultContext})

src/docker.ts

@@ -0,0 +1,19 @@
+import * as exec from '@actions/exec';
+
+export async function isAvailable(): Promise<boolean> {
+  return await exec
+    .getExecOutput('docker', undefined, {
+      ignoreReturnCode: true,
+      silent: true
+    })
+    .then(res => {
+      if (res.stderr.length > 0 && res.exitCode != 0) {
+        return false;
+      }
+      return res.exitCode == 0;
+    })
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    .catch(error => {
+      return false;
+    });
+}

src/main.ts

@@ -1,30 +1,50 @@
 import * as fs from 'fs';
 import * as buildx from './buildx';
 import * as context from './context';
+import * as docker from './docker';
 import * as stateHelper from './state-helper';
 import * as core from '@actions/core';
 import * as exec from '@actions/exec';
 
 async function run(): Promise<void> {
   try {
+    const defContext = context.defaultContext();
+    const inputs: context.Inputs = await context.getInputs(defContext);
+
+    // standalone if docker cli not available
+    const standalone = !(await docker.isAvailable());
+
     core.startGroup(`Docker info`);
-    await exec.exec('docker', ['version']);
-    await exec.exec('docker', ['info']);
+    if (standalone) {
+      core.info(`Docker info skipped in standalone mode`);
+    } else {
+      await exec.exec('docker', ['version'], {
+        failOnStdErr: false
+      });
+      await exec.exec('docker', ['info'], {
+        failOnStdErr: false
+      });
+    }
     core.endGroup();
 
-    if (!(await buildx.isAvailable())) {
+    if (!(await buildx.isAvailable(standalone))) {
       core.setFailed(`Docker buildx is required. See https://github.com/docker/setup-buildx-action to set up buildx.`);
       return;
     }
     stateHelper.setTmpDir(context.tmpDir());
 
-    const buildxVersion = await buildx.getVersion();
-    const defContext = context.defaultContext();
-    const inputs: context.Inputs = await context.getInputs(defContext);
+    const buildxVersion = await buildx.getVersion(standalone);
+    await core.group(`Buildx version`, async () => {
+      const versionCmd = buildx.getCommand(['version'], standalone);
+      await exec.exec(versionCmd.command, versionCmd.args, {
+        failOnStdErr: false
+      });
+    });
 
     const args: string[] = await context.getArgs(inputs, defContext, buildxVersion);
+    const buildCmd = buildx.getCommand(args, standalone);
     await exec
-      .getExecOutput('docker', args, {
+      .getExecOutput(buildCmd.command, buildCmd.args, {
         ignoreReturnCode: true
       })
       .then(res => {