doc: how to release #60

	name: Generate changelog before release.yml

	on:
	pull_request:
	types:
	- opened

	env:
	PJ_NAME: tempura

	jobs:
	changelog:
	name: Generate and commit changelog for ${{ github.head_ref }}
	runs-on: ubuntu-latest
	if: startsWith(github.head_ref, 'release/')
	outputs:
	changelog: ${{ steps.changelog.outputs.changes }}
	steps:
	- name: Setup \| Checkout Code
	uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Parse version
	run: \|
	ref=${{ github.head_ref }}
	version=${ref#release/}
	echo $version
	echo "Version=$version" >> $GITHUB_ENV

	- name: Setup \| Go
	uses: actions/setup-go@v3

	- name: Setup \| Install git-chglog
	run: go install github.com/git-chglog/git-chglog/cmd/git-chglog@latest

	- name: Generate changelog
	run: \|
	/home/runner/go/bin/git-chglog --next-tag ${{ env.Version }} ${{ env.Version }}\| tee RELEASE_NOTE.md
	/home/runner/go/bin/git-chglog --next-tag ${{ env.Version }} ..${{ env.Version }} \| tee CHANGELOG.md

	- name: Commit CHANGELOG.md
	uses: stefanzweifel/git-auto-commit-action@v5
	with:
	branch: master
	commit_message: 'doc: update CHANGELOG.md for ${{ env.Version }} [skip ci]'
	file_pattern: CHANGELOG.md

	- name: Post comments
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	URL: ${{ github.event.pull_request.html_url }}
	run:
	gh pr comment -F RELEASE_NOTE.md "${URL}"

	- name: Upload CHANGELOG-${{ env.Version }}.md
	uses: actions/upload-artifact@v3
	with:
	name: release-note
	path: RELEASE_NOTE.md

	- name: Upload CHANGELOG.md
	uses: actions/upload-artifact@v3
	with:
	name: changelog-all
	path: CHANGELOG.md

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