Merge pull request #26935 from github/repo-sync #1936

	name: Keep caches warm

	# What it does: Makes sure the caching of ./node_modules and ./.next
	# is kept warm for making pull requests more rapid.
	# Why we have it: A PR workflow that depends on caching can't reuse a
	# cached artifact acorss PRs unless it also runs on `main`.
	# Who does it impact: Docs engineering, open-source engineering contributors.

	on:
	workflow_dispatch:
	push:
	branches:
	- main

	permissions:
	contents: read

	jobs:
	keep-caches-warm:
	if: github.repository == 'github/docs-internal' \|\| github.repository == 'github/docs'
	runs-on: ${{ fromJSON('["ubuntu-latest", "ubuntu-20.04-xl"]')[github.repository == 'github/docs-internal'] }}
	steps:
	- name: Check out repo
	uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab

	- uses: ./.github/actions/node-npm-setup

	- name: Cache nextjs build
	uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
	with:
	path: .next/cache
	key: ${{ runner.os }}-nextjs-${{ hashFiles('package*.json') }}

	- name: Build
	run: npm run build

	- uses: ./.github/actions/warmup-remotejson-cache

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