Add more test coverage for checkstyle #2507

	name: Validate examples

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	permissions: read-all

	jobs:
	examples:
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
	with:
	show-progress: false

	- name: Set up Go
	uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32 # v5.0.2
	with:
	go-version-file: go.ver
	cache: false

	- name: Build binary
	run: make

	- name: Verify examples
	run: \|
	export AUTH_KEY=12345
	for CFG in docs/examples/* ; do
	echo ">>> $CFG"
	./pint -c "$CFG" config
	done

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