Merge upstream #39

	---
	name: Merge upstream
	# this is fine since gha runs with yaml 1.2
	on: # yamllint disable-line rule:truthy
	issues:
	types: [opened, reopened, edited]

	jobs:
	merge_upstream:
	name: Create merge upstream PR
	if: startsWith(github.event.issue.title, 'Merge upstream')
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	fetch-depth: 0
	- name: Fetch upstream
	run: \|
	git remote add upstream https://github.com/ros/rosdistro.git
	git fetch upstream
	- name: Create upstream merge branch
	id: create
	run: \|
	branch=merge-upstream-$(date '+%Y-%m-%d-%H-%M-%S')
	echo "branch=${branch}" >> ${GITHUB_OUTPUT}
	git config --global user.email 'github-actions[bot]'
	git config --global user.name '41898282+github-actions[bot]@users.noreply.github.com'
	git checkout -b ${branch}
	git merge --no-ff --no-edit upstream/master
	- name: Remove upstream remote
	run: git remote remove upstream # avoid to open PR in upstream repo
	- name: Create PR
	run: \|
	git push origin ${{ steps.create.outputs.branch }}
	gh pr create \
	--repo ${GITHUB_REPOSITORY} \
	--base alpine-custom-apk \
	--head ${{ steps.create.outputs.branch }} \
	--title "Merge upstream" \
	--body "close #${{ github.event.issue.number }}"
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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