article: MCUboot Getting Start Guide for ESP32 #5

	name: Trigger preview for PR

	on:
	pull_request:
	types: [opened, synchronize, reopened]

	permissions:
	contents: read

	jobs:
	build-preview:
	runs-on: ubuntu-latest

	steps:
	- name: Collect PR metadata
	run: \|
	echo "${{ github.event.pull_request.number }}" > pr_num.txt
	echo "${{ github.event.pull_request.html_url }}" > pr_url.txt
	echo "${{ github.event.pull_request.head.ref }}" > pr_head_ref.txt
	echo "${{ github.event.pull_request.head.sha }}" > pr_head_sha.txt

	- name: Debug PR metadata
	run: \|
	set -euo pipefail

	echo "=== PR metadata from files (if present) ==="
	for file in \
	pr_num.txt \
	pr_url.txt \
	pr_head_ref.txt \
	pr_head_sha.txt
	do
	if [ -f "$file" ]; then
	printf "%-18s: %s\n" "$file" "$(cat "$file")"
	else
	printf "%-18s: (missing)\n" "$file"
	fi
	done

	- name: Upload PR metadata
	uses: actions/upload-artifact@v4
	with:
	name: pr-metadata
	path: \|
	pr_num.txt
	pr_url.txt
	pr_head_ref.txt
	pr_head_sha.txt

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