meda
8d5336b8fd
The 'Stop BuildKit (idle cleanup)' step executed immediately after setup (composite action steps are not deferred to job end; always() does not create a post-step), so every downstream buildx build failed with 'waiting for connection: context deadline exceeded'.
57 lines
2.5 KiB
YAML
57 lines
2.5 KiB
YAML
name: 'Setup BuildKit (with labels)'
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description: 'Idempotently start a labeled buildkitd container and point buildx at it via the remote driver. The default docker-container driver cannot set container labels, and the Docker API has no PATCH-labels for existing containers — so we manage the container ourselves and Watchtower/Dockhand see the labels.'
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inputs:
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container_name:
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description: 'Name of the buildkitd container'
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required: false
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default: 'buildkitd'
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image:
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description: 'BuildKit image'
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required: false
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default: 'moby/buildkit:buildx-stable-1'
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monitor_only:
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description: 'Value for com.centurylinklabs.watchtower.monitor-only'
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required: false
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default: 'false'
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dockhand_notify:
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description: 'Value for dockhand.notify'
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required: false
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default: 'false'
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network:
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description: 'Docker network for the buildkitd container — MUST match the network the job containers run on, otherwise the name is unresolvable'
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required: false
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default: 'git_default'
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port:
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description: 'TCP port buildkitd listens on'
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required: false
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default: '8375'
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runs:
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using: 'composite'
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steps:
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- name: Start BuildKit container (with labels)
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shell: bash
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run: |
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# Recreate if a stopped/old container exists (config drift, e.g. port
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# mapping changes, would otherwise be skipped by the name guard).
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# If it is already running with the right config, keep it (warm cache).
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if [ "$(docker inspect -f '{{.State.Running}}' ${{ inputs.container_name }} 2>/dev/null)" != "true" ]; then
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docker rm -f ${{ inputs.container_name }} >/dev/null 2>&1 || true
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docker run -d --name ${{ inputs.container_name }} --privileged \
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--network ${{ inputs.network }} \
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-p 127.0.0.1:${{ inputs.port }}:${{ inputs.port }} \
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--restart unless-stopped \
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--label com.centurylinklabs.watchtower.monitor-only=${{ inputs.monitor_only }} \
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--label dockhand.notify=${{ inputs.dockhand_notify }} \
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${{ inputs.image }} --addr tcp://0.0.0.0:${{ inputs.port }}
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fi
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v4
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with:
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driver: remote
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# The act_runner executor runs with network=host (confirmed in runner
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# logs), so it reaches buildkitd via the host-published loopback port.
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# Docker DNS names are NOT resolvable from the host namespace.
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endpoint: tcp://127.0.0.1:${{ inputs.port }}
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