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Add French course materials #1

	name: 2-commit-a-file

	on:
	workflow_dispatch:
	push:

	permissions:
	contents: write

	jobs:
	when_playground_changed:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with: { fetch-depth: 2 }

	- name: Filtre, le fichier playground a-t-il changé
	id: changed
	run: \|
	set -e
	git diff --name-only HEAD~1 HEAD \| grep -E '^playground/README.md$'

	- name: Mettre à jour le README, Étape 2, commit d’un fichier
	if: steps.changed.outcome == 'success'
	uses: skills/action-update-step@v2
	with:
	path: .github/steps/2-commit-a-file.md