[CONTENT] Error handling #3

	name: Generate Image Preview
	on:
	pull_request:
	types:
	- opened
	- synchronize
	paths:
	- 'content/**'

	# cancel in-progress runs on new commits to same PR (github.event.number)
	concurrency:
	group: gen_preview_image${{ github.workflow }}-${{ github.event.number \|\| github.sha }}
	cancel-in-progress: true

	jobs:
	generate-preview:
	runs-on: ubuntu-latest
	name: Generate Preview Image
	permissions: # Job-level permissions configuration starts here
	contents: write # 'write' access to repository contents
	pull-requests: write # 'write' access to pull requests
	steps:
	- uses: actions/checkout@v4
	with:
	persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal access token.
	fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
	# Download bin of gen_preview
	- name: Install preview bin
	run: curl --proto '=https' --tlsv1.2 -LsSf https://github.com/RustLangES/rustmap/releases/download/v0.2.0/preview-installer.sh \| sh

	- name: Get changed files
	run: \|
	files=$(git --no-pager diff --name-only FETCH_HEAD $(git merge-base FETCH_HEAD main))
	preview ./crates/preview/assets/bg_preview.png ./public/previews $files
	- name: Commit changes
	run: \|
	git config --global user.name 'github-actions[bot]'
	git config --global user.email 'github-actions[bot]@users.noreply.github.com'
	git add -A
	git commit -m "chore: generate opengraph image" \|\| echo "No changes to commit"

	- uses: ad-m/github-push-action@master
	with:
	branch: ${{ github.head_ref }}

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