Fix push_next handling of subchains #204

	name: Publish

	on:
	push:
	branches:
	- master

	jobs:

	publish-tutorial:
	name: Publish - Tutorial
	runs-on: ubuntu-latest
	env:
	RUST_LOG: info
	RUST_VERSION: 1.51.0
	MDBOOK_VERSION: 0.4.21
	steps:
	# Checkout
	- name: Checkout Repository
	uses: actions/checkout@v2
	# Dependencies
	- name: Install Java
	uses: actions/setup-java@v1
	with:
	java-version: 14
	- name: Install Rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ env.RUST_VERSION }}
	- name: Cache mdbook
	id: cache-mdbook
	uses: actions/cache@v2
	with:
	path: ~/.cargo/bin/mdbook
	key: ${{ runner.os }}-${{ env.RUST_VERSION }}-${{ env.MDBOOK_VERSION }}
	- name: Install mdbook
	uses: actions-rs/cargo@v1
	if: steps.cache-mdbook.outputs.cache-hit != 'true'
	with:
	command: install
	args: mdbook --version ${{ env.MDBOOK_VERSION }} --no-default-features
	# Publish
	- name: Build Index
	working-directory: ./generator
	run: ./gradlew run --args="--directory=.. index"
	- name: Cache Preprocessor
	id: cache-preprocessor
	uses: actions/cache@v2
	with:
	path: ~/.cargo/bin/vk-preprocessor
	key: ${{ hashFiles('index.txt', 'tutorial/book/preprocessor/**') }}
	- name: Build Preprocessor
	uses: actions-rs/cargo@v1
	if: steps.cache-preprocessor.outputs.cache-hit != 'true'
	with:
	command: install
	args: --path ./tutorial/book/preprocessor
	- name: Build Tutorial
	working-directory: ./tutorial/book
	run: mdbook build
	- name: Publish Tutorial
	uses: JamesIves/github-pages-deploy-action@3.7.1
	with:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	BRANCH: gh-pages
	FOLDER: ./tutorial/book/book
	CLEAN: true

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