Revert "Use ubuntu-lts instead of specific version" #18

	# Build using Alire.
	name: Build

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	permissions: write-all

	jobs:
	build:
	name: CI on ${{ matrix.os }}

	runs-on: ${{ matrix.os }}

	strategy:
	matrix:
	os: [ubuntu-20.04, ubuntu-latest]

	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: ada-actions/toolchain
	uses: ada-actions/toolchain@ce2021
	with:
	distrib: community
	target: native
	- name: alire-project/setup-alire
	uses: alire-project/setup-alire@v2
	- name: Update apt
	if: runner.os == 'Linux'
	run: sudo apt-get update
	- name: Update
	run: alr index --update-all
	- name: Build
	run: alr --non-interactive build

	release:
	name: Continuous AppImage
	runs-on: ubuntu-20.04
	steps:
	- name: Delete 'continuous' release and tag
	uses: dev-drprasad/[email protected]
	with:
	delete_release: true
	github_token: ${{ secrets.GITHUB_TOKEN }}
	tag_name: continuous
	- name: Checkout
	uses: actions/checkout@v2
	- name: ada-actions/toolchain
	uses: ada-actions/toolchain@ce2021
	with:
	distrib: community
	target: native
	- name: alire-project/setup-alire
	uses: alire-project/setup-alire@v2
	with:
	branch: "master"
	- name: Update apt
	run: sudo apt-get update
	- name: Update
	run: alr index --update-all
	- name: Build
	run: alr --non-interactive build
	- name: Build AppImage
	run: VERSION=continuous bin/alr2appimage
	- name: Release
	uses: softprops/action-gh-release@v2
	with:
	files: alr2appimage*.AppImage
	prerelease: true
	tag_name: continuous

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