releases: fallback to github api if github cdn fails

__tests__/buildx/install.test.itg.ts

@@ -14,13 +14,16 @@
  * limitations under the License.
  */
 
-import {describe, expect, test} from '@jest/globals';
+import {describe, expect, jest, test} from '@jest/globals';
 import * as fs from 'fs';
 
 import {Install} from '../../src/buildx/install';
 
 const maybe = !process.env.GITHUB_ACTIONS || (process.env.GITHUB_ACTIONS === 'true' && process.env.ImageOS && process.env.ImageOS.startsWith('ubuntu')) ? describe : describe.skip;
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 maybe('download', () => {
   // prettier-ignore
   test.each(['latest'])(

__tests__/buildx/install.test.ts

@@ -25,6 +25,9 @@ import {Install} from '../../src/buildx/install';
 
 const tmpDir = fs.mkdtempSync(path.join(process.env.TEMP || os.tmpdir(), 'buildx-install-'));
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 afterEach(function () {
   rimraf.sync(tmpDir);
 });

__tests__/compose/install.test.itg.ts

@@ -14,13 +14,16 @@
  * limitations under the License.
  */
 
-import {describe, expect, test} from '@jest/globals';
+import {describe, expect, jest, test} from '@jest/globals';
 import * as fs from 'fs';
 
 import {Install} from '../../src/compose/install';
 
 const maybe = !process.env.GITHUB_ACTIONS || (process.env.GITHUB_ACTIONS === 'true' && process.env.ImageOS && process.env.ImageOS.startsWith('ubuntu')) ? describe : describe.skip;
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 maybe('download', () => {
   // prettier-ignore
   test.each(['latest'])(

__tests__/compose/install.test.ts

@@ -25,6 +25,9 @@ import {Install} from '../../src/compose/install';
 
 const tmpDir = fs.mkdtempSync(path.join(process.env.TEMP || os.tmpdir(), 'compose-install-'));
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 afterEach(function () {
   rimraf.sync(tmpDir);
 });

__tests__/docker/install.test.itg.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import {beforeAll, describe, test, expect} from '@jest/globals';
+import {beforeAll, describe, jest, test, expect} from '@jest/globals';
 import fs from 'fs';
 import os from 'os';
 import path from 'path';
@@ -27,6 +27,9 @@ import {Exec} from '../../src/exec';
 
 const tmpDir = () => fs.mkdtempSync(path.join(process.env.TEMP || os.tmpdir(), 'docker-install-itg-'));
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 beforeAll(async () => {
   const undockInstall = new UndockInstall();
   const undockBinPath = await undockInstall.download('v0.10.0', true);

__tests__/docker/install.test.ts

@@ -25,6 +25,9 @@ import {Install, InstallSourceArchive, InstallSourceImage} from '../../src/docke
 
 const tmpDir = fs.mkdtempSync(path.join(process.env.TEMP || os.tmpdir(), 'docker-install-'));
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 afterEach(function () {
   rimraf.sync(tmpDir);
 });

__tests__/github.test.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import {describe, expect, jest, it, beforeEach, afterEach, test} from '@jest/globals';
+import {describe, expect, jest, it, beforeEach, afterEach} from '@jest/globals';
 import * as fs from 'fs';
 import * as path from 'path';
 import * as core from '@actions/core';
@@ -43,29 +43,6 @@ describe('context', () => {
   });
 });
 
-describe('releases', () => {
-  // prettier-ignore
-  test.each([
-    ['.github/buildx-lab-releases.json'],
-    ['.github/buildx-releases.json'],
-    ['.github/compose-lab-releases.json'],
-    ['.github/compose-releases.json'],
-    ['.github/docker-releases.json'],
-    ['.github/regclient-releases.json'],
-    ['.github/undock-releases.json'],
-  ])('returns %p', async (path: string) => {
-    const github = new GitHub();
-    const releases = await github.releases('App', {
-      owner: 'docker',
-      repo: 'actions-toolkit',
-      ref: 'main',
-      path: path
-    });
-    expect(releases).toBeDefined();
-    expect(Object.keys(releases).length).toBeGreaterThan(0);
-  });
-});
-
 describe('serverURL', () => {
   const originalEnv = process.env;
   beforeEach(() => {

__tests__/github.unmock.test.ts

@@ -0,0 +1,73 @@
+/**
+ * Copyright 2025 actions-toolkit authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {describe, expect, jest, it, test} from '@jest/globals';
+
+import {GitHub} from '../src/github';
+
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
+describe('releases', () => {
+  it('returns Undock releases JSON', async () => {
+    const github = new GitHub();
+    const releases = await github.releases('Undock', {
+      owner: 'docker',
+      repo: 'actions-toolkit',
+      ref: 'main',
+      path: '.github/undock-releases.json'
+    });
+    expect(releases).toBeDefined();
+    expect(Object.keys(releases).length).toBeGreaterThan(0);
+  });
+});
+
+describe('releasesRaw', () => {
+  // prettier-ignore
+  test.each([
+    ['.github/buildx-lab-releases.json'],
+    ['.github/buildx-releases.json'],
+    ['.github/compose-lab-releases.json'],
+    ['.github/compose-releases.json'],
+    ['.github/docker-releases.json'],
+    ['.github/regclient-releases.json'],
+    ['.github/undock-releases.json'],
+  ])('returns %p using GitHub CDN', async (path: string) => {
+    const github = new GitHub();
+    const releases = await github.releasesRaw('Undock', {
+      owner: 'docker',
+      repo: 'actions-toolkit',
+      ref: 'main',
+      path: path
+    });
+    expect(releases).toBeDefined();
+    expect(Object.keys(releases).length).toBeGreaterThan(0);
+  });
+});
+
+describe('releasesAPI', () => {
+  it('returns Undock releases JSON using GitHub API', async () => {
+    const github = new GitHub();
+    const releases = await github.releasesAPI('Undock', {
+      owner: 'docker',
+      repo: 'actions-toolkit',
+      ref: 'main',
+      path: '.github/undock-releases.json'
+    });
+    expect(releases).toBeDefined();
+    expect(Object.keys(releases).length).toBeGreaterThan(0);
+  });
+});

__tests__/regclient/install.test.itg.ts

@@ -14,11 +14,14 @@
  * limitations under the License.
  */
 
-import {describe, expect, test} from '@jest/globals';
+import {describe, expect, jest, test} from '@jest/globals';
 import * as fs from 'fs';
 
 import {Install} from '../../src/regclient/install';
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 describe('download', () => {
   // prettier-ignore
   test.each(['latest'])(

__tests__/regclient/install.test.ts

@@ -25,6 +25,9 @@ import {Install} from '../../src/regclient/install';
 
 const tmpDir = fs.mkdtempSync(path.join(process.env.TEMP || os.tmpdir(), 'regclient-install-'));
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 afterEach(function () {
   rimraf.sync(tmpDir);
 });

__tests__/undock/install.test.itg.ts

@@ -14,11 +14,14 @@
  * limitations under the License.
  */
 
-import {describe, expect, test} from '@jest/globals';
+import {describe, expect, jest, test} from '@jest/globals';
 import * as fs from 'fs';
 
 import {Install} from '../../src/undock/install';
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 describe('download', () => {
   // prettier-ignore
   test.each(['latest'])(

__tests__/undock/install.test.ts

@@ -25,6 +25,9 @@ import {Install} from '../../src/undock/install';
 
 const tmpDir = fs.mkdtempSync(path.join(process.env.TEMP || os.tmpdir(), 'undock-install-'));
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 afterEach(function () {
   rimraf.sync(tmpDir);
 });

__tests__/undock/undock.test.itg.ts

@@ -14,13 +14,16 @@
  * limitations under the License.
  */
 
-import {describe, expect, it} from '@jest/globals';
+import {describe, expect, jest, it} from '@jest/globals';
 import fs from 'fs';
 import os from 'os';
 
 import {Undock} from '../../src/undock/undock';
 import {Install as UndockInstall} from '../../src/undock/install';
 
+// needs GitHub REST API to get releases JSON
+jest.unmock('@actions/github');
+
 describe('run', () => {
   it('extracts moby/moby-bin:26.1.5', async () => {
     const install = new UndockInstall();

src/github.ts

@@ -58,6 +58,20 @@ export class GitHub {
   }
 
   public async releases(name: string, opts: GitHubContentOpts): Promise<Record<string, GitHubRelease>> {
+    let releases: Record<string, GitHubRelease>;
+    try {
+      releases = await this.releasesRaw(name, opts);
+    } catch (error) {
+      try {
+        releases = await this.releasesAPI(name, opts);
+      } catch (error) {
+        throw new Error(`Failed to get ${name} releases: ${error instanceof Error ? error.message : error}`);
+      }
+    }
+    return releases;
+  }
+
+  public async releasesRaw(name: string, opts: GitHubContentOpts): Promise<Record<string, GitHubRelease>> {
     const url = `https://raw.githubusercontent.com/${opts.owner}/${opts.repo}/${opts.ref}/${opts.path}`;
     const http: httpm.HttpClient = new httpm.HttpClient('docker-actions-toolkit');
     // prettier-ignore
@@ -72,6 +86,18 @@ export class GitHub {
     return <Record<string, GitHubRelease>>JSON.parse(dt);
   }
 
+  public async releasesAPI(name: string, opts: GitHubContentOpts): Promise<Record<string, GitHubRelease>> {
+    const apiResp = await this.octokit.rest.repos.getContent({
+      owner: opts.owner,
+      repo: opts.repo,
+      ref: opts.ref,
+      path: opts.path
+    });
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const dt = Buffer.from((apiResp.data as any).content, (apiResp.data as any).encoding).toString();
+    return <Record<string, GitHubRelease>>JSON.parse(dt);
+  }
+
   static get context(): Context {
     return github.context;
   }