.github: set appropriate triggers for build action #19

	name: Build

	on:
	push:
	branches:
	- main
	paths:
	- '.github/workflows/build.yml'
	- 'sphinx_alice_theme/**'
	- 'tests/**'
	- 'pyproject.toml'
	- 'ruff.toml'
	- 'tox.ini'
	pull_request:
	branches:
	- main
	paths:
	- '.github/workflows/build.yml'
	- 'sphinx_alice_theme/**'
	- 'tests/**'
	- 'pyproject.toml'
	- 'ruff.toml'
	- 'tox.ini'
	workflow_dispatch:

	jobs:
	build:
	name: Build
	runs-on: ${{ matrix.os }}
	container:
	image: ${{ matrix.img }}
	strategy:
	matrix:
	include:
	- { os: ubuntu-latest, img: "python:3.12-slim", python: "3.12", toxenv: py312, cache: ~/.cache/pip }
	- { os: ubuntu-latest, img: "python:3.12-slim", toxenv: lint, cache: ~/.cache/pip }

	steps:
	- name: Checkout sources
	uses: actions/checkout@v4

	- name: Set up Python ${{ matrix.python }}
	if: ${{ matrix.img == '' }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}

	- name: Cache pip
	uses: actions/cache@v4
	id: cache-pip
	with:
	path: ${{ matrix.cache }}
	key: ${{ matrix.os }}-${{ matrix.python }}-pip

	- name: Setup container cache ownership
	if: ${{ matrix.img != '' }}
	run: \|
	mkdir -p ~/.cache
	chown -R $(id -u) ~/.cache

	- name: Install dependencies
	run: python -m pip install --upgrade tox

	- name: tox
	env:
	TOXENV: ${{ matrix.toxenv }}
	run: tox

Provide feedback