Merge pull request #720 from Automattic/publish/sbom #348

	name: Build Alpine

	on:
	push:
	branches:
	- master
	paths:
	- "alpine/**"
	- ".github/workflows/alpine.yml"
	- ".github/actions/build-docker-image/**"
	pull_request:
	paths:
	- "alpine/**"
	- ".github/workflows/alpine.yml"
	- ".github/actions/build-docker-image/**"
	workflow_dispatch:

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	push_to_registry:
	name: Push Docker image to GitHub Packages
	runs-on: ubuntu-latest
	permissions:
	packages: write
	contents: read
	pull-requests: write
	security-events: write
	id-token: write
	attestations: write
	steps:
	- name: Check out the repo
	uses: actions/checkout@v4

	- name: Get image version
	id: getversion
	run: echo "version=$(head -n 1 alpine/Dockerfile \| sed -r -e 's/^([^:]+):([^ @$-]+).*/\2/')" >> "${GITHUB_OUTPUT}"

	- name: Build and push image
	uses: ./.github/actions/build-docker-image
	with:
	context: alpine
	push: ${{ github.base_ref == null }}
	cache-from: type=gha,scope=alpine
	cache-to: type=gha,mode=max,scope=alpine
	no-cache: ${{ github.event_name == 'workflow_dispatch' }}
	primaryTag: ghcr.io/automattic/vip-container-images/alpine:${{ steps.getversion.outputs.version }}
	tags: ghcr.io/automattic/vip-container-images/alpine:latest

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