Check formatting #356

	name: Check formatting

	on:
	workflow_call:
	inputs:
	tag:
	description: "Tag of DOLFINx docker image"
	default: "nightly"
	required: true
	type: string
	workflow_dispatch:
	inputs:
	tag:
	description: "Tag of DOLFINx docker image"
	default: "nightly"
	required: true
	type: string

	pull_request:
	branches:
	- main
	schedule:
	- cron: "0 8 * * *"

	env:
	DEB_PYTHON_INSTALL_LAYOUT: deb_system
	DEFAULT_TAG: nightly

	jobs:
	get_image_tag:
	runs-on: ubuntu-latest
	outputs:
	image: ${{ steps.docker_tag.outputs.image }}
	steps:
	- id: docker_tag
	run: echo "image=${{ inputs.tag \|\| env.DEFAULT_TAG }}" >> $GITHUB_OUTPUT

	build:
	needs: get_image_tag
	runs-on: ubuntu-22.04
	container: ghcr.io/fenics/dolfinx/dolfinx:${{ needs.get_image_tag.outputs.image }}
	steps:
	- uses: actions/checkout@v4

	- name: Update pip
	run: python3 -m pip install --break-system-packages --upgrade pip setuptools

	- name: Install code
	run: python3 -m pip install --break-system-packages .[dev]

	- name: Check code formatting with ruff
	run: \|
	ruff check .
	ruff format --check .

	- name: Mypy check
	run: python3 -m mypy -v

Provide feedback