Update software-supply-chain-attacks-crypto.md #156

	name: Check Markdown Frontmatter

	on:
	push:
	paths:
	- '**.md'
	pull_request:
	paths:
	- '**.md'

	jobs:
	check-frontmatter:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Setup Node.js
	uses: actions/setup-node@v3
	with:
	node-version: '16'

	- name: Install dependencies
	run: \|
	npm init -y
	npm install gray-matter

	- name: Check frontmatter
	run: \|
	npm install gray-matter
	node -e '
	const fs = require("fs");
	const matter = require("gray-matter");
	const path = require("path");

	function getAllMarkdownFiles(dir) {
	let results = [];
	const files = fs.readdirSync(dir);

	for (const file of files) {
	if (file === "node_modules") {
	continue;
	}
	const filePath = path.join(dir, file);
	const stat = fs.statSync(filePath);

	if (stat.isDirectory() && !file.startsWith(".")) {
	results = results.concat(getAllMarkdownFiles(filePath));
	} else if (file.endsWith(".md")) {
	results.push(filePath);
	}
	}

	return results;
	}

	let hasError = false;
	const mdFiles = getAllMarkdownFiles(".");

	for (const file of mdFiles) {
	try {
	const content = fs.readFileSync(file, "utf8");
	const { data } = matter(content);

	if (!data.title) {
	console.error(`Error: ${file} is missing title in frontmatter`);
	hasError = true;
	}
	} catch (error) {
	console.error(`Error processing ${file}: ${error.message}`);
	hasError = true;
	}
	}

	if (hasError) {
	process.exit(1);
	}
	'

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