Add more locking around on-disk image cache #1363

	name: Boilerplate

	on:
	pull_request:
	branches: ['main']

	jobs:

	check:
	name: Boilerplate Check
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false # Keep running if one leg fails.
	matrix:
	extension:
	- go
	- sh

	# Map between extension and human-readable name.
	include:
	- extension: go
	language: Go
	- extension: sh
	language: Bash

	steps:
	- uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

	- uses: chainguard-dev/actions/boilerplate@84c993eaf02da1c325854fb272a4df9184bd80fc # main
	with:
	extension: ${{ matrix.extension }}
	language: ${{ matrix.language }}

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