Update README #18

	name: Linters

	on:
	pull_request:
	workflow_dispatch:
	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	pre-commit:
	name: "Frappe Linter"
	runs-on: self-hosted
	container:
	image: alpine:latest # latest used here for simplicity, not recommended
	defaults:
	run:
	shell: sh
	steps:
	- name: fix tar dependency in alpine container image
	run: \|
	apk --no-cache add tar nodejs npm python3 git bash py3-pip
	npm install -g prettier
	# check python modules installed versions
	python3 -m pip freeze --local
	pip install pre-commit --break-system-packages

	- uses: actions/checkout@v4
	- run: \|
	git config --global --add safe.directory $GITHUB_WORKSPACE
	git fetch --no-tags --prune --depth=1 origin +refs/heads/:refs/remotes/origin/

	- name: Get changed files
	id: file_changes
	run: \|
	export DIFF=$(git diff --name-only origin/${{ github.base_ref }} ${{ github.sha }})
	echo "Diff between ${{ github.base_ref }} and ${{ github.sha }}"
	echo "files=$( echo "$DIFF" \| xargs echo )" >> $GITHUB_OUTPUT


	- name: Cache pre-commit since we use pre-commit from container
	uses: actions/cache@v4
	with:
	path: ~/.cache/pre-commit
	key: pre-commit-3\|${{ hashFiles('.pre-commit-config.yaml') }}

	- name: Execute pre-commit
	run: \|
	pre-commit run --color=always --show-diff-on-failure --files ${{ steps.file_changes.outputs.files }}

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