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perf(ci): skip base image builds when tag already exists in GHCR

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Add a 'Check if image already exists in GHCR' step to tier1 and tier2
base image jobs. After GHCR login, inspect the branch-tagged manifest
and set exists=true if found. The metadata extract, build-push, and
attestation steps are all gated on exists != 'true', so subsequent
pushes that haven't changed Dockerfiles skip the 30-60 min conan/apt/
node/pip/android builds entirely.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
johndoe6345789
2026-03-13 22:25:59 +00:00
parent 9ca047cc24
commit c4320a255a
1 changed files with 32 additions and 0 deletions
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32
.github/workflows/gated-pipeline.yml vendored
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@@ -1403,8 +1403,22 @@ jobs:
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Check if image already exists in GHCR
id: check
shell: bash
run: |
IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.image }}:${{ github.ref_name }}"
if docker manifest inspect "$IMAGE" > /dev/null 2>&1; then
echo "exists=true" >> "$GITHUB_OUTPUT"
echo "Image $IMAGE already exists — skipping build"
else
echo "exists=false" >> "$GITHUB_OUTPUT"
echo "Image $IMAGE not found — will build"
fi
- name: Extract metadata (tags, labels)
id: meta
if: steps.check.outputs.exists != 'true'
uses: docker/metadata-action@v5
with:
images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.image }}
@@ -1418,6 +1432,7 @@ jobs:
- name: Build and push Docker image
id: build
if: steps.check.outputs.exists != 'true'
uses: docker/build-push-action@v6
with:
context: .
@@ -1433,6 +1448,7 @@ jobs:
VCS_REF=${{ github.sha }}
- name: Generate artifact attestation
if: steps.check.outputs.exists != 'true'
uses: actions/attest-build-provenance@v4
with:
subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.image }}
@@ -1471,8 +1487,22 @@ jobs:
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Check if image already exists in GHCR
id: check
shell: bash
run: |
IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.image }}:${{ github.ref_name }}"
if docker manifest inspect "$IMAGE" > /dev/null 2>&1; then
echo "exists=true" >> "$GITHUB_OUTPUT"
echo "Image $IMAGE already exists — skipping build"
else
echo "exists=false" >> "$GITHUB_OUTPUT"
echo "Image $IMAGE not found — will build"
fi
- name: Extract metadata (tags, labels)
id: meta
if: steps.check.outputs.exists != 'true'
uses: docker/metadata-action@v5
with:
images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.image }}
@@ -1486,6 +1516,7 @@ jobs:
- name: Build and push Docker image
id: build
if: steps.check.outputs.exists != 'true'
uses: docker/build-push-action@v6
with:
context: .
@@ -1502,6 +1533,7 @@ jobs:
VCS_REF=${{ github.sha }}
- name: Generate artifact attestation
if: steps.check.outputs.exists != 'true'
uses: actions/attest-build-provenance@v4
with:
subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.image }}