ci: add github worflow for creating a release #22

	---
	name: Pre-release
	on:
	pull_request:

	jobs:
	prerelease:
	name: Pre-release
	runs-on: ubuntu-latest

	permissions:
	contents: write
	packages: write

	steps:
	- name: Checkout sources
	uses: actions/checkout@v4
	with:
	# checkout merge request HEAD instead of merge commit
	ref: ${{ github.event.pull_request.head.sha }}
	fetch-depth: 0

	- name: Get Next Version
	id: semver
	uses: ietf-tools/semver-action@v1
	if: ${{ !env.ACT }}
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	branch: master

	- name: Short SHA
	id: short_sha
	run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT

	- name: Update CHANGELOG
	id: changelog
	uses: requarks/changelog-action@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}

	- name: Build artifacts
	run: make version=${{ steps.semver.outputs.next }}-pre-${{ steps.short_sha.outputs.short_sha }} artifact

	- name: Create Draft Release
	uses: ncipollo/release-action@v1
	if: ${{ !env.ACT }}
	with:
	allowUpdates: true
	artifacts: "rf-liquidsoap*.tar.gz"
	body: ${{ steps.changelog.outputs.changes }}
	commit: ${{ github.event.pull_request.head.sha }}
	draft: true
	makeLatest: false
	name: ${{ steps.semver.outputs.next }}-pre-${{ github.head_ref }}
	prerelease: true
	removeArtifacts: true
	replacesArtifacts: true
	tag: ${{ steps.semver.outputs.next }}-pre-${{ github.head_ref }}
	token: ${{ secrets.GITHUB_TOKEN }}
	updateOnlyUnreleased: true

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