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fa0d37a579
This is shorter and easier to read. Also, according to the dev notes, Bash should not be used.
64 lines
2.5 KiB
YAML
64 lines
2.5 KiB
YAML
name: 'Configure Docker'
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description: 'Set up Docker build driver and configure build cache args'
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inputs:
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cache-provider:
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description: 'gha or cirrus cache provider'
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required: true
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runs:
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using: 'composite'
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steps:
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- name: Check inputs
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shell: python
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run: |
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# We expect only gha or cirrus as inputs to cache-provider
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if "${{ inputs.cache-provider }}" not in ("gha", "cirrus"):
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print("::warning title=Unknown input to configure docker action::Provided value was ${{ inputs.cache-provider }}")
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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with:
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# Use host network to allow access to cirrus gha cache running on the host
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driver-opts: |
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network=host
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# This is required to allow buildkit to access the actions cache
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- name: Expose actions cache variables
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uses: actions/github-script@v6
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with:
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script: |
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Object.keys(process.env).forEach(function (key) {
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if (key.startsWith('ACTIONS_')) {
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core.info(`Exporting ${key}`);
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core.exportVariable(key, process.env[key]);
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}
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});
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- name: Construct docker build cache args
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shell: bash
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run: |
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# Configure docker build cache backend
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#
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# On forks the gha cache will work but will use Github's cache backend.
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# Docker will check for variables $ACTIONS_CACHE_URL, $ACTIONS_RESULTS_URL and $ACTIONS_RUNTIME_TOKEN
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# which are set automatically when running on GitHub infra: https://docs.docker.com/build/cache/backends/gha/#synopsis
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# Use cirrus cache host
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if [[ ${{ inputs.cache-provider }} == 'cirrus' ]]; then
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url_args="url=${CIRRUS_CACHE_HOST},url_v2=${CIRRUS_CACHE_HOST}"
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else
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url_args=""
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fi
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# Always optimistically --cache‑from in case a cache blob exists
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args=(--cache-from "type=gha${url_args:+,${url_args}},scope=${CONTAINER_NAME}")
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# Only add --cache-to when using the Cirrus cache provider and pushing to the default branch.
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if [[ ${{ inputs.cache-provider }} == 'cirrus' && ${{ github.event_name }} == "push" && ${{ github.ref_name }} == ${{ github.event.repository.default_branch }} ]]; then
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args+=(--cache-to "type=gha${url_args:+,${url_args}},mode=max,ignore-error=true,scope=${CONTAINER_NAME}")
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fi
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# Always `--load` into docker images (needed when using the `docker-container` build driver).
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args+=(--load)
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echo "DOCKER_BUILD_CACHE_ARG=${args[*]}" >> $GITHUB_ENV
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