Build on latest ubuntu and archlinux as well #24

	name: Tests
	on:
	push:
	schedule:
	- cron: "* * 7 * *"

	jobs:
	build:
	strategy:
	matrix:
	image: [ "ubuntu:latest", "ubuntu:22.04", "archlinux:latest" ]
	continue-on-error: true
	runs-on: ubuntu-latest
	container:
	image: ${{ matrix.image }}
	steps:
	- name: Checkout prepare script
	uses: actions/checkout@v4
	with:
	sparse-checkout: prepare.sh
	sparse-checkout-cone-mode: false

	- name: Prepare build environment
	run: ./prepare.sh -u \| tee -a "$GITHUB_ENV"

	- name: Check out repository code
	uses: actions/checkout@v4

	- name: Correct ownership of repository
	run: chown -R $(id -u):$(id -g) .

	- name: Build
	run: make build

	- name: Check README.md
	run: tools/is-clean --make --root=doc README.md

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