Merge pull request #1283 from ko-build/dependabot/go_modules/github.c… #479

	name: image

	on:
	push:
	branches:
	- 'main'
	workflow_dispatch:

	permissions:
	contents: read
	packages: write
	id-token: write

	jobs:
	image:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
	- uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5.0.0
	with:
	go-version-file: 'go.mod'
	check-latest: true
	- uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20 # v3.5.0

	# Build ko from HEAD, build and push an image tagged with the commit SHA,
	# then keylessly sign it with cosign.
	- name: Publish and sign image
	env:
	KO_DOCKER_REPO: ghcr.io/${{ github.repository }}
	COSIGN_EXPERIMENTAL: 'true'
	run: \|
	go build ./
	echo "${{ github.token }}" \| ./ko login ghcr.io --username "${{ github.actor }}" --password-stdin
	img=$(./ko build --bare --platform=all -t latest -t ${{ github.sha }} ./)
	echo "built ${img}"
	cosign sign ${img} --yes \
	-a sha=${{ github.sha }} \
	-a run_id=${{ github.run_id }} \
	-a run_attempt=${{ github.run_attempt }}

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