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fix(ci): stop amd64 builds clobbering the arm64 publish cache #838

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fix(ci): stop amd64 builds clobbering the arm64 publish cache #838

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17 changes: 14 additions & 3 deletions .github/workflows/docker.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -251,7 +251,10 @@ jobs:
name: publish prod image to GHCR
needs: [build, scan]
runs-on: ubuntu-latest
timeout-minutes: 30
# 45 min: a cold arm64 build under QEMU takes ~30 min, which sat
# exactly at the old limit and cancelled two of three main builds
# (skipping their deploys). Warm-cache publishes are much faster.
timeout-minutes: 45
permissions:
contents: read
packages: write
Expand Down Expand Up @@ -300,8 +303,16 @@ jobs:
push: true
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
cache-from: type=gha,scope=prod-${{ steps.cache-key.outputs.week }}
cache-to: type=gha,scope=prod-${{ steps.cache-key.outputs.week }},mode=max
# Dedicated multi-arch scope: the amd64-only `build` job writes
# to the plain weekly scope on every PR/push, clobbering arm64
# layers cached there — which forced a full ~30min QEMU rebuild
# on every publish. Reading both scopes keeps amd64 layer reuse;
# writing only the multiarch scope preserves arm64 layers
# between publishes.
cache-from: |
type=gha,scope=prod-multiarch-${{ steps.cache-key.outputs.week }}
type=gha,scope=prod-${{ steps.cache-key.outputs.week }}
cache-to: type=gha,scope=prod-multiarch-${{ steps.cache-key.outputs.week }},mode=max

# ---------------------------------------------------------------
# Alert — auto-create an issue when the deploy pipeline breaks
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