docker: configFile method

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

Author: crazy-max

__tests__/docker/docker.test.ts

@@ -15,17 +15,30 @@
  */
 
 import {afterEach, beforeEach, describe, expect, it, jest} from '@jest/globals';
+import * as fs from 'fs';
 import path from 'path';
 import * as io from '@actions/io';
 import osm = require('os');
+import * as rimraf from 'rimraf';
 
 import {Docker} from '../../src/docker/docker';
 import {Exec} from '../../src/exec';
 
+import {ConfigFile} from '../../src/types/docker';
+
+const fixturesDir = path.join(__dirname, '..', 'fixtures');
+
+// prettier-ignore
+const tmpDir = path.join(process.env.TEMP || '/tmp', 'docker-jest');
+
 beforeEach(() => {
   jest.clearAllMocks();
 });
 
+afterEach(function () {
+  rimraf.sync(tmpDir);
+});
+
 describe('configDir', () => {
   const originalEnv = process.env;
   beforeEach(() => {
@@ -48,6 +61,45 @@ describe('configDir', () => {
   });
 });
 
+describe('configFile', () => {
+  const originalEnv = process.env;
+  beforeEach(() => {
+    jest.resetModules();
+    if (!fs.existsSync(tmpDir)) {
+      fs.mkdirSync(tmpDir, {recursive: true});
+    }
+    process.env = {
+      ...originalEnv,
+      DOCKER_CONFIG: tmpDir
+    };
+  });
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+  it('auths', async () => {
+    fs.copyFileSync(path.join(fixturesDir, 'docker-config-auths.json'), path.join(tmpDir, 'config.json'));
+    expect(Docker.configFile()).toEqual({
+      auths: {
+        'https://index.docker.io/v1/': {
+          auth: 'am9lam9lOmhlbGxv',
+          email: 'user@example.com'
+        }
+      }
+    } as unknown as ConfigFile);
+  });
+  it('proxies', async () => {
+    fs.copyFileSync(path.join(fixturesDir, 'docker-config-proxies.json'), path.join(tmpDir, 'config.json'));
+    expect(Docker.configFile()).toEqual({
+      proxies: {
+        default: {
+          httpProxy: 'http://127.0.0.1:3128',
+          httpsProxy: 'http://127.0.0.1:3128'
+        }
+      }
+    } as unknown as ConfigFile);
+  });
+});
+
 describe('isAvailable', () => {
   it('cli', async () => {
     const ioWhichSpy = jest.spyOn(io, 'which');

__tests__/fixtures/docker-config-auths.json

@@ -0,0 +1,8 @@
+{
+	"auths": {
+		"https://index.docker.io/v1/": {
+			"auth": "am9lam9lOmhlbGxv",
+			"email": "user@example.com"
+		}
+	}
+}

__tests__/fixtures/docker-config-proxies.json

@@ -0,0 +1,8 @@
+{
+  "proxies": {
+    "default": {
+      "httpProxy": "http://127.0.0.1:3128",
+      "httpsProxy": "http://127.0.0.1:3128"
+    }
+  }
+}

src/docker/docker.ts

@@ -14,17 +14,29 @@
  * limitations under the License.
  */
 
+import fs from 'fs';
 import os from 'os';
 import path from 'path';
 import * as core from '@actions/core';
 import * as io from '@actions/io';
+
 import {Exec} from '../exec';
 
+import {ConfigFile} from '../types/docker';
+
 export class Docker {
   static get configDir(): string {
     return process.env.DOCKER_CONFIG || path.join(os.homedir(), '.docker');
   }
 
+  public static configFile(): ConfigFile | undefined {
+    const f = path.join(Docker.configDir, 'config.json');
+    if (!fs.existsSync(f)) {
+      return undefined;
+    }
+    return <ConfigFile>JSON.parse(fs.readFileSync(f, {encoding: 'utf-8'}));
+  }
+
   public static async isAvailable(): Promise<boolean> {
     return await io
       .which('docker', true)

src/types/docker.ts

@@ -0,0 +1,66 @@
+/**
+ * Copyright 2023 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.
+ */
+
+// https://github.com/docker/cli/blob/master/cli/config/configfile/file.go
+export interface ConfigFile {
+  auths: Record<string, AuthConfig>;
+  HttpHeaders?: Record<string, string>;
+  psFormat?: string;
+  imagesFormat?: string;
+  networksFormat?: string;
+  pluginsFormat?: string;
+  volumesFormat?: string;
+  statsFormat?: string;
+  detachKeys?: string;
+  credsStore?: string;
+  credHelpers?: Record<string, string>;
+  serviceInspectFormat?: string;
+  servicesFormat?: string;
+  tasksFormat?: string;
+  secretFormat?: string;
+  configFormat?: string;
+  nodesFormat?: string;
+  pruneFilters?: string[];
+  proxies?: Record<string, ProxyConfig>;
+  experimental?: string;
+  stackOrchestrator?: string;
+  kubernetes?: KubernetesConfig;
+  currentContext?: string;
+  cliPluginsExtraDirs?: string[];
+  plugins?: Record<string, Record<string, string>>;
+  aliases?: Record<string, string>;
+}
+
+export interface ProxyConfig {
+  httpProxy?: string;
+  httpsProxy?: string;
+  noProxy?: string;
+  ftpProxy?: string;
+}
+
+export interface KubernetesConfig {
+  allNamespaces?: string;
+}
+
+export interface AuthConfig {
+  username?: string;
+  password?: string;
+  auth?: string;
+  email?: string;
+  serveraddress?: string;
+  identitytoken?: string;
+  registrytoken?: string;
+}