Add example GitHub Actions workflow for BuildKit

Discussed in microsoft#34

helpful_tools/Install-BuiltKit-GitHubActions/README.md

@@ -0,0 +1,5 @@
+# BuildKit GitHub Actions Example
+
+[Docker is pinned to v24.0.7](https://github.com/actions/runner-images/issues/9478) on GitHub Actions hosted Windows runners, so containerd and BuildKit need to be installed manually.
+
+This [workflow file](./workflow.yaml) can be used as an example.

helpful_tools/Install-BuiltKit-GitHubActions/workflow.yaml

@@ -0,0 +1,36 @@
+name: Build
+
+on:
+  push:
+
+jobs:
+  main:
+    runs-on: windows-latest
+    steps:
+      - name: Setup containerd
+        run: |
+          $version = "1.7.15"
+          curl.exe -L https://github.com/containerd/containerd/releases/download/v$version/containerd-$version-windows-amd64.tar.gz -o containerd.tar.gz
+          tar.exe xvf containerd.tar.gz
+
+          .\bin\containerd.exe --register-service
+          Start-Service containerd
+
+      - name: Setup BuildKit
+        run: |
+          $version = "v0.13.1"
+          curl.exe -L https://github.com/moby/buildkit/releases/download/$version/buildkit-$version.windows-amd64.tar.gz -o buildkit.tar.gz
+          tar.exe xvf buildkit.tar.gz
+          
+          .\bin\buildkitd.exe --register-service
+          Start-Service buildkitd
+
+      - name: Setup Docker Buildx
+        run: |
+          $version = "v0.13.1"
+          curl.exe -L https://github.com/docker/buildx/releases/download/$version/buildx-$version.windows-amd64.exe -o $env:ProgramData\Docker\cli-plugins\docker-buildx.exe
+
+      - uses: docker/setup-buildx-action@v3.2.0
+        with:
+          driver: remote
+          endpoint: npipe:////./pipe/buildkitd

helpful_tools/README.md

@@ -16,6 +16,7 @@ A container runtime is software that executes containers and manages container i
 - Handles the complete container lifecycle, including image transfer and storage, container execution and supervision, and low-level storage and network attachments.
 - Use containerd when you need an efficient runtime, particularly in resource-constrained environments like embedded systems or IoT devices, or when embedding into a larger system.
 #### [👉 Install ContainerD with PowerShell](https://github.com/microsoft/Windows-Containers/tree/Main/helpful_tools/Install-ContainerdRuntime)
+#### [👉 Install ContainerD and BuildKit on GitHub Actions](https://github.com/microsoft/Windows-Containers/tree/Main/helpful_tools/Install-BuildKit-GitHubActions)
 
 ## System Information Tools
 ### 3. Query Job Limits