feat(dockerfile-llb-frontend): Add the initial LLB frontend code (#706) #174

	name: Expire Action Caches

	on:
	push:
	branches: [staging]

	jobs:

	check-and-update:
	name: Clean
	runs-on: ubuntu-latest

	permissions:
	actions: write

	steps:
	- name: Clean up obsolete caches
	uses: actions/github-script@v6
	with:
	script: \|
	const cachePrefixes = new Map([
	['e2e-cli-Linux-go-', 0],
	['gochecks-Linux-go-', 0],
	['gounit-Linux-go-', 0],
	['build-protoc-Linux-go-', 0],
	['build-qemu-devices-Linux-go-', 0]
	]);

	const cacheSuffixLen = 64

	await github.
	paginate(github.rest.actions.getActionsCacheList, {
	owner: context.repo.owner,
	repo: context.repo.repo
	})
	.then(caches => {
	for (const cache of caches) {
	if (cache.ref == 'refs/heads/staging') {
	const cachePrefix = cache.key.slice(0, -cacheSuffixLen)
	if (cachePrefixes.has(cachePrefix)) {
	const seen = cachePrefixes.get(cachePrefix)
	if (seen > 0) {
	(async () => {
	await github.rest.actions.deleteActionsCacheById({
	owner: context.repo.owner,
	repo: context.repo.repo,
	cache_id: cache.id
	})
	core.notice(`Deleted cache with key ${cache.key} for ref ${cache.ref}`)
	})()
	}
	cachePrefixes.set(cachePrefix, seen + 1)
	}
	} else {
	(async () => {
	await github.rest.repos.getBranch({
	owner: context.repo.owner,
	repo: context.repo.repo,
	branch: cache.ref
	})
	.catch(error => {
	if (error.status == 404) {
	(async () => {
	await github.rest.actions.deleteActionsCacheById({
	owner: context.repo.owner,
	repo: context.repo.repo,
	cache_id: cache.id
	})
	core.notice(`Deleted cache with key ${cache.key} for ref ${cache.ref}`)
	})()
	} else {
	throw error
	}
	})
	})()
	}
	}
	});

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