修复文档管道中的缩略图生成逻辑，确保在没有页面时缩略图设置为None；在文件夹路由中添加空文件夹检查，避免返回空列表时引发错误。 #58

	name: Create and publish a Docker image

	on:
	push:
	branches:
	- "main"
	workflow_dispatch:

	env:
	REGISTRY: ghcr.io
	OWNER: betterandbetterii
	IMAGE_NAME: the-lab

	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest
	# Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
	permissions:
	contents: read
	packages: write
	id-token: write
	steps:
	- name: Set Timezone to CST
	run: \|
	sudo timedatectl set-timezone Asia/Shanghai
	date

	- name: Generate Docker image tag
	id: generate_tag
	run: \|
	TAG=$(date +%Y%m%d-%H%M)
	echo "TAG=${TAG}" >> $GITHUB_ENV

	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Log in to the Container registry
	uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push Docker image
	id: push
	uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
	with:
	context: .
	push: true
	tags: ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:${{ env.TAG }},${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:latest
	# labels: \|
	# changelog=${{ steps.changelog.outputs.changelog }}
	cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:buildcache
	cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:buildcache,mode=max

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