refactor: use statement instead of self-disposing on Delegatee #331

	name: publish docs

	on:
	push:
	branches-ignore:
	- v*
	tags-ignore:
	- v*

	jobs:
	publish-docs:
	runs-on: ubuntu-latest
	permissions:
	contents: write
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-tags: true
	- name: Dotnet Setup
	uses: actions/setup-dotnet@v4
	with:
	dotnet-version: 6.0.400

	- run: dotnet restore
	- run: dotnet tool restore
	- run: dotnet docfx docs/docfx.json

	- name: update index.html
	run: \|
	set -ev

	if [[ "${{ github.ref_name }}" =~ ^v ]]; then
	echo "Prevent tags started with 'v'" >&2
	exit
	fi

	mkdir -p /tmp/gh-pages-root
	latest_version=$(git tag --sort -v:refname \| grep -E -i '^[0-9]+\.[0-9]+\.[0-9]+' \| head -n 1)
	if [[ "$latest_version" = "${{ github.ref_name }}" ]]; then
	index=$(cat docs/_site/index.html)
	{
	echo -n "${index%</title>*}</title>"
	echo "<meta http-equiv=\"refresh\" content=\"0;${{ github.ref_name }}/\">"
	echo "<base href=\"${{ github.ref_name }}/\">"
	echo -n "${index#*</title>}"
	} > /tmp/gh-pages-root/index.html
	fi
	if: github.ref_type == 'tag'
	- name: deploy
	uses: peaceiris/actions-gh-pages@v4
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./docs/_site/
	destination_dir: ${{ github.ref_name }}
	- name: deploy (index.html)
	uses: peaceiris/actions-gh-pages@v4
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: /tmp/gh-pages-root
	destination_dir: .
	keep_files: true
	if: github.ref_type == 'tag'

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