add gitsign image (#483) #24

	name: release

	# run only on tags
	on:
	push:
	tags:
	- 'v*'

	permissions:
	contents: write # needed to write releases
	id-token: write # needed for keyless signing
	packages: write # needed for push images

	jobs:
	release:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
	with:
	fetch-depth: 0 # this is important, otherwise it won't checkout the full tree (i.e. no previous tags)

	- uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5.0.0
	with:
	go-version: '1.22'
	check-latest: true

	- uses: imjasonh/setup-crane@e82f1b9a8007d399333baba4d75915558e9fb6a4 # v0.2

	- uses: sigstore/cosign-installer@e1523de7571e31dbe865fd2e80c5c7c23ae71eb4 # v3.4.0

	- uses: anchore/sbom-action/download-syft@ab5d7b5f48981941c4c5d6bf33aeb98fe3bae38c # v0.15.10

	- name: Set env
	run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> "$GITHUB_ENV"

	- name: Login to GitHub Containers
	uses: docker/login-action@e92390c5fb421da1463c202d546fed0ec5c39f20 # v3.1.0
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- uses: goreleaser/goreleaser-action@7ec5c2b0c6cdda6e8bbb49444bc797dd33d74dd8 # v5.0.0
	with:
	version: latest
	args: release --clean
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	KO_DOCKER_REPO: ghcr.io/sigstore/gitsign

	- name: sign image
	run: \|
	digest=$(crane digest ghcr.io/sigstore/gitsign:${{ env.RELEASE_VERSION }})
	cosign sign "ghcr.io/sigstore/gitsign@${digest}"
	env:
	COSIGN_YES: true

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