Merge pull request #282 from cybozu-go/bump-3.1.1 #19

	name: release
	on:
	push:
	tags:
	- 'v*'
	env:
	tag: ${GITHUB_REF#refs/tags/v}
	prerelease: ${{ contains(github.ref, '-') }}
	jobs:
	release-image:
	name: Release Sabakan Image
	runs-on: ubuntu-22.04
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup golang
	uses: actions/setup-go@v5
	with:
	go-version-file: go.mod

	- name: Build image
	run: make docker-build

	- name: Login to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Push container image
	run: \|
	echo "pushing Sabakan image ..."
	docker tag ghcr.io/cybozu-go/sabakan:latest ghcr.io/cybozu-go/sabakan:${{ env.tag }}
	docker push ghcr.io/cybozu-go/sabakan:${{ env.tag }}
	if ${{ env.prerelease }} ; then
	echo ===== Skip pushing branch tags for pre-release ${{ env.tag }} =====
	exit 0
	fi
	BRANCH=$(echo ${{ env.tag }} \| cut -d "." -f 1-2)
	docker tag ghcr.io/cybozu-go/sabakan:latest ghcr.io/cybozu-go/sabakan:$BRANCH
	docker push ghcr.io/cybozu-go/sabakan:$BRANCH

	release-github:
	name: Release GitHub
	runs-on: ubuntu-22.04
	container:
	image: ghcr.io/cybozu/golang:1.20-jammy # used for ghr, not for go command
	steps:
	- name: Create GitHub release
	run: \|
	OWNER=$(echo ${{ github.repository }} \| cut -d '/' -f 1)
	REPOSITORY=$(echo ${{ github.repository }} \| cut -d '/' -f 2)
	if ${{ env.prerelease }}; then
	PRERELEASE="-prerelease"
	fi
	ghr -t ${{ secrets.GITHUB_TOKEN }} -u ${OWNER} -r ${REPOSITORY} -n v${{ env.tag }} ${PRERELEASE} -b "See [CHANGELOG.md](./CHANGELOG.md) for details." v${{ env.tag }}

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