[WIP] CI: handle required workflows when skipped #48

	name: PR analysis

	on:
	pull_request:

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

	jobs:
	check_diff:
	name: Check files changed
	runs-on: ubuntu-20.04
	env:
	BASE_REF: ${{ github.event.pull_request.base.ref }}
	HEAD_REF: ${{ github.event.pull_request.head.ref }}
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Add forked repository as remote
	run: \|
	git remote add fork ${{ github.event.pull_request.head.repo.clone_url }}
	- name: Fetch base branch from main repository
	run: \|
	git fetch origin ${BASE_REF}
	- name: Fetch head branch from forked repository
	run: \|
	git fetch fork ${HEAD_REF}
	- name: Get files changed
	run: \|
	git diff --name-only --diff-filter=ACMRTUXB origin/${BASE_REF}..fork/${HEAD_REF} > check_diff.txt
	- name: Check files changed
	run: \|
	if grep -v -E "^(Docs\|\.github)/\|\.azure-pipelines\.yml$" check_diff.txt; then
	echo "skip=false"
	echo "skip=false" >> ${GITHUB_OUTPUT}
	else
	echo "skip=true"
	echo "skip=true" >> ${GITHUB_OUTPUT}
	fi
	echo "GITHUB_OUTPUT = ${GITHUB_OUTPUT}"
	outputs:
	skip: ${{ steps.check.outputs.skip }}

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