Merge branch 'main' of https://github.com/matcom/programming #75

	name: Build exercises
	on: push
	jobs:
	build-exercises:
	runs-on: ubuntu-latest
	steps:
	- name: Cloning repo
	uses: actions/checkout@v3
	- name: Creating file list
	id: files_list
	run: \|
	cd exercises
	echo "::set-output name=files::$(printf '"exercises/%s" ' *.md)"
	- name: Removing old files
	run: \|
	cd exercises
	rm exercises.pdf
	- name: Building pdf file
	uses: docker://pandoc/latex:2.9
	with:
	args: --output=exercises/exercises.pdf --pdf-engine=xelatex ${{ steps.files_list.outputs.files }}
	- name: Uploading pdf file
	uses: actions/upload-artifact@v3
	with:
	name: exercises
	path: exercises/exercises.pdf
	- name: Commiting changes
	uses: EndBug/add-and-commit@v9
	with:
	add: exercises/exercises.pdf

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