Merge pull request #41 from Seasawher/update-lean #12

	name: Make Exercise

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	on:
	push:
	branches:
	- master
	workflow_dispatch:

	permissions:
	contents: write
	pages: write
	id-token: write

	jobs:
	build:
	runs-on: ubuntu-latest
	if: github.repository_owner == 'yuma-mizuno'
	steps:
	- name: checkout
	uses: actions/checkout@v4

	- name: Install elan
	run: \|
	set -o pipefail
	curl https://raw.githubusercontent.com/leanprover/elan/master/elan-init.sh -sSf \| sh -s -- -y --default-toolchain none
	echo "$HOME/.elan/bin" >> $GITHUB_PATH

	- name: make exercise
	run: lake exe mk_exercise Solution Tutorial

	- name: diff
	id: diff
	run: \|
	git add -N Tutorial
	git diff --name-only --exit-code
	continue-on-error: true

	- name: commit
	if: steps.diff.outcome == 'failure'
	run: \|
	git config user.name "GitHub Action"
	git config user.email "[email protected]"
	git add Tutorial
	git commit -m "generated by GitHub Action"
	git push

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