archive only existing files. fix #5 #78

	name: 'g++-11 installation test'

	on:
	push:
	paths-ignore:
	- '**.md'
	pull_request:
	workflow_dispatch:

	jobs:

	initial:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- id: add-apt-repo
	uses: tecolicom/actions-install-and-cache@v1
	with:
	cache: workflow
	sudo: true
	run: \|-
	add-apt-repository -y ppa:ubuntu-toolchain-r/test
	apt update
	path: /etc/apt /var/lib/apt /var/lib/waagent
	- uses: ./
	id: action
	with:
	cache: workflow
	tools: g++-11
	method: timestamp
	- run: \|
	g++-11 --version
	- run: test "${{ steps.action.outputs.cache-hit }}" != true

	cached:
	needs: initial
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- id: add-apt-repo
	uses: tecolicom/actions-install-and-cache@v1
	with:
	cache: workflow
	sudo: true
	run: \|-
	add-apt-repository -y ppa:ubuntu-toolchain-r/test
	apt update
	path: /etc/apt /var/lib/apt /var/lib/waagent
	- uses: ./
	id: action
	with:
	cache: workflow
	tools: g++-11
	method: timestamp
	- run: \|
	g++-11 --version
	- run: test "${{ steps.action.outputs.cache-hit }}" == true

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