add job to validate nginx config #2

	name: Nginx Configuration Validation

	on:
	push:
	branches:
	- main
	pull_request:

	permissions: {}

	jobs:
	validate:
	runs-on: ubuntu-latest
	if: github.repository == 'chainguard-dev/edu'

	permissions:
	contents: read

	steps:
	- name: 'Github Actions Runner'
	uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
	with:
	egress-policy: audit

	- name: 'Checkout default branch to $GITHUB_WORKSPACE dir'
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

	- name: Run Nginx validation
	run: \|
	mkdir -p public
	touch public/_aliases
	docker run --rm -v $(pwd)/nginx.conf:/etc/nginx/nginx.conf -v $(pwd)/public/_aliases:/etc/nginx/aliases cgr.dev/chainguard/nginx:latest-dev -t

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