Update docker/build-push-action digest to b32b51a #20

	name: Create and publish a Docker image
	on:
	push:
	branches: [ "main" ]

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	include:
	- dockerfile: ./bird/Dockerfile
	image: ghcr.io/nxthdr/bird
	tags: \|
	ghcr.io/nxthdr/bird:2.16
	build-args: \|
	BIRD_VERSION=2.16
	- dockerfile: ./bird/Dockerfile
	image: ghcr.io/nxthdr/bird
	tags: \|
	ghcr.io/nxthdr/bird:3.0.0
	build-args: \|
	BIRD_VERSION=3.0.0
	permissions:
	contents: read
	packages: write
	attestations: write
	id-token: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Log in to the Container registry
	uses: docker/login-action@7ca345011ac4304463197fac0e56eab1bc7e6af0
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@906ecf0fc0a80f9110f79d9e6c04b1080f4a2621
	with:
	images: ${{ matrix.image }}

	- name: Sync theme submodule
	run: git submodule sync && git submodule update --init --recursive

	- name: Build and push Docker image
	id: push
	uses: docker/build-push-action@b32b51a8eda65d6793cd0494a773d4f6bcef32dc
	with:
	context: .
	file: ${{ matrix.dockerfile }}
	build-args: ${{ matrix.build-args }}
	tags: ${{ matrix.tags }}
	push: true

	- name: Generate artifact attestation
	uses: actions/attest-build-provenance@v2
	with:
	subject-name: ${{ matrix.image }}
	subject-digest: ${{ steps.push.outputs.digest }}
	push-to-registry: true

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