Merge b045ea1d9e into 638ed79f9d

Add note on runner versions

README.md

@@ -19,16 +19,19 @@ See ["Caching dependencies to speed up workflows"](https://docs.github.com/en/ac
 
 The cache backend service has been rewritten from the ground up for improved performance and reliability. [actions/cache](https://github.com/actions/cache) now integrates with the new cache service (v2) APIs.
 
-The new service will gradually roll out as of **February 1st, 2025**. The legacy service will also be sunset on the same date. Changes in these release are **fully backward compatible**.
+The new service will gradually roll out as of **February 1st, 2025**. The legacy service will also be sunset on the same date. Changes in these releases are **fully backward compatible**.
 
 **We are deprecating some versions of this action**. We recommend upgrading to version `v4` or `v3` as soon as possible before **February 1st, 2025.** (Upgrade instructions below).
 
-If you are using pinned SHAs, please use the SHAs of versions `v4.2.0` or `v3.4.0`
+If you are using pinned SHAs, please use the SHAs of versions `v4.2.0` or `v3.4.0`.
 
 If you do not upgrade, all workflow runs using any of the deprecated [actions/cache](https://github.com/actions/cache) will fail.
 
 Upgrading to the recommended versions will not break your workflows.
 
+> **Additionally, if you are managing your own GitHub runners, you must update your runner version to `2.231.0` or newer to ensure compatibility with the new cache service.**  
+> Failure to update both the action version and your runner version may result in workflow failures after the migration date.
+
 Read more about the change & access the migration guide: [reference to the announcement](https://github.com/actions/cache/discussions/1510).
 
 ### v4
@@ -181,6 +184,7 @@ See [Examples](examples.md) for a list of `actions/cache` implementations for us
 * [Clojure - Lein Deps](./examples.md#clojure---lein-deps)
 * [D - DUB](./examples.md#d---dub)
 * [Deno](./examples.md#deno)
+* [Docker](./examples.md#docker)
 * [Elixir - Mix](./examples.md#elixir---mix)
 * [Go - Modules](./examples.md#go---modules)
 * [Haskell - Cabal](./examples.md#haskell---cabal)

examples.md

@@ -10,6 +10,7 @@
   - [Linux](#linux)
   - [macOS](#macos)
   - [Windows](#windows-1)
+- [Docker](#docker)
 - [Elixir - Mix](#elixir---mix)
 - [Erlang - Rebar3](#erlang--rebar3)
 - [Go - Modules](#go---modules)
@@ -176,6 +177,40 @@ steps:
     key: ${{ runner.os }}-deno-${{ hashFiles('**/deps.ts') }}
 ```
 
+## Docker
+
+```yaml
+- name: Cache Docker layers
+  uses: actions/cache@v3
+  with:
+    path: /tmp/.buildx-cache
+    key: my-project-${{ matrix.arch }}-buildx-${{ hashFiles('my-directory/Dockerfile') }}
+    restore-keys: |
+      my-project-${{ matrix.arch }}-buildx-
+- name: Set up QEMU
+  uses: docker/setup-qemu-action@v3
+- name: Set up Docker Buildx
+  uses: docker/setup-buildx-action@v3
+- name: Build and Test
+  uses: docker/build-push-action@v3
+  with:
+    push: false
+    context: .
+    platforms: ${{ matrix.arch }}
+    file: my-directory/Dockerfile
+    tags: my-username/my-image:latest
+    cache-from: type=local,src=/tmp/.buildx-cache
+    cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
+-
+  # Temporary workaround
+  # https://github.com/docker/build-push-action/issues/252
+  # https://github.com/moby/buildkit/issues/1896
+  name: Move cache
+  run: |
+    rm -rf /tmp/.buildx-cache
+    mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+```
+
 ## Elixir - Mix
 
 ```yaml