46 lines
1.7 KiB
YAML
46 lines
1.7 KiB
YAML
name: Resolve buildx cache settings
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description: >-
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Turns the DOCKER_CACHE_* variables exported by the runner into buildx driver options and
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cache refs. Missing variables degrade the job to a build without cache instead of failing it.
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inputs:
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cache-image:
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description: Cache image path without the registry host (e.g. "org/repo/app").
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required: true
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outputs:
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driver-opts:
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description: driver-opts for docker/setup-buildx-action; empty when the cache registry needs no network pinning.
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value: ${{ steps.resolve.outputs.driver-opts }}
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cache-from:
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description: cache-from ref for docker/build-push-action; empty disables cache reads.
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value: ${{ steps.resolve.outputs.cache-from }}
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cache-to:
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description: cache-to ref for docker/build-push-action; empty disables cache writes.
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value: ${{ steps.resolve.outputs.cache-to }}
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runs:
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using: composite
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steps:
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- id: resolve
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shell: bash
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env:
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CACHE_IMAGE: ${{ inputs.cache-image }}
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run: |
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if [ -n "${DOCKER_CACHE_NETWORK}" ]; then
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echo "driver-opts=network=${DOCKER_CACHE_NETWORK}" >> "$GITHUB_OUTPUT"
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else
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echo "driver-opts=" >> "$GITHUB_OUTPUT"
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fi
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if [ -z "${DOCKER_CACHE_TYPE}" ] || [ -z "${DOCKER_CACHE_SERVER}" ]; then
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echo "::warning::DOCKER_CACHE_* not set on the runner - building without cache"
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echo "cache-from=" >> "$GITHUB_OUTPUT"
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echo "cache-to=" >> "$GITHUB_OUTPUT"
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exit 0
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fi
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ref="${DOCKER_CACHE_SERVER}/${CACHE_IMAGE}:cache"
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echo "cache-from=type=${DOCKER_CACHE_TYPE},ref=${ref},registry.insecure=true" >> "$GITHUB_OUTPUT"
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echo "cache-to=type=${DOCKER_CACHE_TYPE},ref=${ref},registry.insecure=true,mode=max" >> "$GITHUB_OUTPUT"
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