chore: add config file for ReadTheDocs (#2599) #45

	name: HtmlTest

	on:
	push:
	branches:
	- 'main'
	- '[0-9]+.[1-9][0-9]*.x'
	paths:
	- 'docs/**'
	pull_request:
	branches:
	- 'main'
	- '[0-9]+.[1-9][0-9]*.x'
	paths:
	- 'docs/**'

	jobs:
	htmltest:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v4
	with:
	submodules: true

	- name: Cache HTMLTest packages
	uses: actions/cache@v3
	with:
	path: \|
	docs/tmp/.htmltest
	key: ${{ runner.os }}-htmltest

	- name: Cache Hugo packages
	uses: actions/cache@v3
	with:
	path: \|
	docs/tmp/.hugo
	key: ${{ runner.os }}-hugo-${{ hashFiles('docs/go.sum') }}

	- name: Check HTML
	run: make htmltest

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