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Update Docker cache restoration step in CI config #23759

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Update Docker cache restoration step in CI config #23759

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14 changes: 11 additions & 3 deletions content/manuals/build/ci/github-actions/cache.md
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Original file line number Diff line number Diff line change
Expand Up @@ -219,6 +219,9 @@ jobs:
build:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v5

Comment on lines +222 to +224
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@dvdksn dvdksn Nov 24, 2025

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Why is checkout needed here? By default build-push action should build with git context.

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@KhalidAlansary KhalidAlansary Nov 24, 2025

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It's for the build-cache-dance action. It needs to read the dockerfile to parse it and extract the paths of the cache mounts used in the dockerfile. Without checkout, I get this error:

No cache map provided. Trying to parse the Dockerfile to find the cache mount instructions...
Error: Failed to parse cache map. Expected JSON, got:
{}
Error: ENOENT: no such file or directory, open 'build/package/Dockerfile'

- name: Login to Docker Hub
uses: docker/login-action@v3
with:
Expand All @@ -230,6 +233,7 @@ jobs:

- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
id: setup-buildx

- name: Docker meta
id: meta
Expand All @@ -248,10 +252,13 @@ jobs:
path: go-build-cache
key: ${{ runner.os }}-go-build-cache-${{ hashFiles('**/go.sum') }}

- name: Inject go-build-cache
uses: reproducible-containers/buildkit-cache-dance@4b2444fec0c0fb9dbf175a96c094720a692ef810 # v2.1.4
- name: Restore Docker cache mounts
uses: reproducible-containers/buildkit-cache-dance@5b81f4d29dc8397a7d341dba3aeecc7ec54d6361 # v3.3.0
with:
cache-source: go-build-cache
builder: ${{ steps.setup-buildx.outputs.name }}
cache-dir: cache-mount
dockerfile: build/package/Dockerfile
skip-extraction: ${{ steps.cache.outputs.cache-hit }}

- name: Build and push
uses: docker/build-push-action@v6
Expand All @@ -263,6 +270,7 @@ jobs:
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
platforms: linux/amd64,linux/arm64

```

For more information about this workaround, refer to the
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