feat(docker-build): Add "--copy" option

packages/docker-build/README.md

@@ -58,8 +58,13 @@ Example:
 ```sh
 yarn docker build @foo/bar
 yarn docker build @foo/bar -t image-tag
+yarn docker build --copy secret.key --copy config.json @foo/bar
 ```
 
 #### `-f,--file`
 
 Path to `Dockerfile`. Default to the Dockerfile in the workspace or the project.
+
+#### `--copy`
+
+Copy additional files to a Docker image. This is useful for secret keys or configuration files. The files will be copied to `manifests` folder. The path can be either a path relative to the Dockerfile or an absolute path.

packages/docker-build/src/commands/build.ts

@@ -18,6 +18,7 @@ import copyManifests from '../utils/copyManifests';
 import copyCacheMarkedFiles from '../utils/copyCacheMarkedFiles';
 import generateLockfile from '../utils/generateLockfile';
 import packWorkspace from '../utils/packWorkspace';
+import copyAdditional from '../utils/copyAdditional';
 
 export default class DockerBuildCommand extends BaseCommand {
   @Command.String()
@@ -29,6 +30,9 @@ export default class DockerBuildCommand extends BaseCommand {
   @Command.String('-f,--file')
   public dockerFilePath?: string;
 
+  @Command.Array('--copy')
+  public copyFiles?: string[];
+
   public static usage = Command.Usage({
     category: 'Docker-related commands',
     description: 'Build a Docker image for a workspace',
@@ -38,13 +42,19 @@ export default class DockerBuildCommand extends BaseCommand {
       You have to create a Dockerfile in your workspace or your project. You can also specify the path to Dockerfile using the "-f, --file" option.
 
       Additional arguments can be passed to "docker build" directly, please check the Docker docs for more info: https://docs.docker.com/engine/reference/commandline/build/
+
+      You can copy additional files or folders to a Docker image using the "--copy" option. This is useful for secret keys or configuration files. The files will be copied to "manifests" folder. The path can be either a path relative to the Dockerfile or an absolute path.
     `,
     examples: [
       ['Build a Docker image for a workspace', 'yarn docker build @foo/bar'],
       [
         'Pass additional arguments to docker build command',
         'yarn docker build @foo/bar -t image-tag',
       ],
+      [
+        'Copy additional files to a Docker image',
+        'yarn docker build --copy secret.key --copy config.json @foo/bar',
+      ],
     ],
   });
 
@@ -129,6 +139,15 @@ export default class DockerBuildCommand extends BaseCommand {
               project,
               report,
             });
+
+            if (this.copyFiles && this.copyFiles.length) {
+              await copyAdditional({
+                destination: manifestDir,
+                files: this.copyFiles,
+                dockerFilePath,
+                report,
+              });
+            }
           });
 
           for (const ws of requiredWorkspaces) {

packages/docker-build/src/utils/copyAdditional.ts

@@ -0,0 +1,35 @@
+import { PortablePath, xfs, ppath, toFilename } from '@yarnpkg/fslib';
+import { Report } from '@yarnpkg/core';
+
+function resolvePath(baseDir: PortablePath, inputPath: string): PortablePath {
+  const path = toFilename(inputPath);
+
+  if (ppath.isAbsolute(path)) {
+    return ppath.relative(baseDir, path);
+  }
+
+  return path;
+}
+
+export default async function copyAdditional({
+  destination,
+  files,
+  dockerFilePath,
+  report,
+}: {
+  destination: PortablePath;
+  files: string[];
+  dockerFilePath: PortablePath;
+  report: Report;
+}): Promise<void> {
+  const baseDir = ppath.dirname(dockerFilePath);
+
+  for (const file of files) {
+    const path = resolvePath(baseDir, file);
+    const src = ppath.join(baseDir, path);
+    const dest = ppath.join(destination, path);
+
+    report.reportInfo(null, path);
+    await xfs.copyPromise(dest, src);
+  }
+}

yarn.lock

@@ -2623,7 +2623,7 @@ babel-plugin-lazy-import@arcanis/babel-plugin-lazy-import:
     "@babel/template": ^7.4.4
   peerDependencies:
     "@babel/core": ^7
-  checksum: 3/3a0b1d65c8a8814b04e92083b5498b7eba088d9750510699e2b81b4035522f54a6f367caac800ab773af7ce65e7b2e342d85e560af24d417de2c0b3274d43abe
+  checksum: 3/e5b5246c2b333a6110a8eff277048e944cd293904ec4bf1deeac3276d5fe17bee6f56c9e5b8ff6668c5450e7c5520a34ac2400b04e3bc41a44b5d97c6aaaee39
   languageName: node
   linkType: hard