fix(core): support cache-from and cache-to flags in DockerImage

packages/aws-cdk-lib/core/lib/bundling.ts

@@ -1,6 +1,7 @@
 import { spawnSync } from 'child_process';
 import * as crypto from 'crypto';
 import { isAbsolute, join } from 'path';
+import { DockerCacheOption } from './assets';
 import { FileSystem } from './fs';
 import { dockerExec } from './private/asset-staging';
 import { quiet, reset } from './private/jsii-deprecated';
@@ -239,7 +240,7 @@ export class BundlingDockerImage {
   }
 
   /** @param image The Docker image */
-  protected constructor(public readonly image: string, private readonly _imageHash?: string) {}
+  protected constructor(public readonly image: string, private readonly _imageHash?: string) { }
 
   /**
    * Provides a stable representation of this image for JSON serialization.
@@ -355,6 +356,8 @@ export class DockerImage extends BundlingDockerImage {
       ...(options.file ? ['-f', join(path, options.file)] : []),
       ...(options.platform ? ['--platform', options.platform] : []),
       ...(options.targetStage ? ['--target', options.targetStage] : []),
+      ...(options.cacheFrom ? [...options.cacheFrom.map(cacheFrom => ['--cache-from', this.cacheOptionToFlag(cacheFrom)]).flat()] : []),
+      ...(options.cacheTo ? ['--cache-to', this.cacheOptionToFlag(options.cacheTo)] : []),
       ...flatten(Object.entries(buildArgs).map(([k, v]) => ['--build-arg', `${k}=${v}`])),
       path,
     ];
@@ -379,6 +382,14 @@ export class DockerImage extends BundlingDockerImage {
     return new DockerImage(image);
   }
 
+  private static cacheOptionToFlag(option: DockerCacheOption): string {
+    let flag = `type=${option.type}`;
+    if (option.params) {
+      flag += ',' + Object.entries(option.params).map(([k, v]) => `${k}=${v}`).join(',');
+    }
+    return flag;
+  }
+
   /** The Docker image */
   public readonly image: string;
 
@@ -602,13 +613,27 @@ export interface DockerBuildOptions {
    * @default - Build all stages defined in the Dockerfile
    */
   readonly targetStage?: string;
+
+  /**
+   * Cache from options to pass to the `docker build` command.
+   *
+   * @default - no cache from args are passed
+   */
+  readonly cacheFrom?: DockerCacheOption[];
+
+  /**
+   * Cache to options to pass to the `docker build` command.
+   *
+   * @default - no cache to args are passed
+   */
+  readonly cacheTo?: DockerCacheOption;
 }
 
 function flatten(x: string[][]) {
   return Array.prototype.concat([], ...x);
 }
 
-function isSeLinux() : boolean {
+function isSeLinux(): boolean {
   if (process.platform != 'linux') {
     return false;
   }

packages/aws-cdk-lib/core/test/bundling.test.ts

@@ -124,6 +124,51 @@ describe('bundling', () => {
     ])).toEqual(true);
   });
 
+  test('bundling with image from asset with cache-to & cache-from', () => {
+    const spawnSyncStub = sinon.stub(child_process, 'spawnSync').returns({
+      status: 0,
+      stderr: Buffer.from('stderr'),
+      stdout: Buffer.from('stdout'),
+      pid: 123,
+      output: ['stdout', 'stderr'],
+      signal: null,
+    });
+
+    const imageHash = '123456abcdef';
+    const fingerprintStub = sinon.stub(FileSystem, 'fingerprint');
+    fingerprintStub.callsFake(() => imageHash);
+    const cacheTo = { type: 'local', params: { dest: 'path/to/local/dir' } };
+    const cacheFrom1 = {
+      type: 's3', params: { region: 'us-west-2', bucket: 'my-bucket', name: 'foo' },
+    };
+    const cacheFrom2 = {
+      type: 'gha', params: { url: 'https://example.com', token: 'abc123', scope: 'gh-ref-image2' },
+    };
+
+    const options = { cacheTo, cacheFrom: [cacheFrom1, cacheFrom2] };
+    const image = DockerImage.fromBuild('docker-path', options);
+    image.run();
+
+    const tagHash = crypto.createHash('sha256').update(JSON.stringify({
+      path: 'docker-path',
+      ...options,
+    })).digest('hex');
+    const tag = `cdk-${tagHash}`;
+
+    expect(spawnSyncStub.firstCall.calledWith(dockerCmd, [
+      'build', '-t', tag,
+      '--cache-from', 'type=s3,region=us-west-2,bucket=my-bucket,name=foo',
+      '--cache-from', 'type=gha,url=https://example.com,token=abc123,scope=gh-ref-image2',
+      '--cache-to', 'type=local,dest=path/to/local/dir',
+      'docker-path',
+    ])).toEqual(true);
+
+    expect(spawnSyncStub.secondCall.calledWith(dockerCmd, [
+      'run', '--rm',
+      tag,
+    ])).toEqual(true);
+  });
+
   test('bundling with image from asset with target stage', () => {
     const spawnSyncStub = sinon.stub(child_process, 'spawnSync').returns({
       status: 0,