Merge pull request #22 from cvmfs/pyproject #13

	# .github/workflows/ci.yml
	name: CI
	on:
	push:
	pull_request:

	jobs:
	tox:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python: ["3.6", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
	include:
	# Older CPythons live on Debian Buster images
	- python: "3.6"
	image: "python:3.6-buster"
	# Current releases use Debian Bookworm images
	- python: "3.9"
	image: "python:3.9-bookworm"
	- python: "3.10"
	image: "python:3.10-bookworm"
	- python: "3.11"
	image: "python:3.11-bookworm"
	- python: "3.12"
	image: "python:3.12-bookworm"
	- python: "3.13"
	image: "python:3.13-bookworm"
	- python: "3.14"
	image: "python:3.14-rc-bookworm"

	# Run each matrix entry inside the chosen Python image
	container:
	image: ${{ matrix.image }}

	steps:
	- uses: actions/checkout@v4

	# Cache pip inside the container filesystem
	- name: Set up pip cache
	uses: actions/cache@v4
	with:
	path: \|
	~/.cache/pip
	key: ${{ runner.os }}-pip-${{ matrix.python }}-${{ hashFiles('/pyproject.toml', '/requirements*.txt', 'tox.ini', 'setup.cfg', 'setup.py') }}
	restore-keys: \|
	${{ runner.os }}-pip-${{ matrix.python }}-

	- name: Show Python
	run: python -V && which python && pip -V

	- name: Upgrade pip & install tox
	run: \|
	python -m pip install --upgrade pip
	pip install tox

	- name: Run tox for current interpreter
	run: tox -e py

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