Add GHA workflow to rebuild and republish site on changes to docs/sit… #1

	# SPDX-License-Identifier: BSD-3-Clause
	# Copyright Contributors to the OpenColorIO Project.
	#
	# GitHub Actions workflow file
	# https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions

	name: Deploy OCIO Homepage

	on:
	push:
	branches:
	- main
	paths:
	- 'docs/site/**'
	workflow_dispatch:

	jobs:
	deploy:
	runs-on: ubuntu-latest

	steps:
	# Step 1: Checkout the main branch
	- name: Checkout main branch
	uses: actions/checkout@v3
	with:
	fetch-depth: 0 # Fetch full history to access all branches

	# Step 2: Install Hugo (Extended Version)
	- name: Install Hugo
	uses: peaceiris/actions-hugo@v2
	with:
	hugo-version: 'latest'
	extended: true # Use extended version for Sass/SCSS support

	# Step 3: Build the Hugo site
	- name: Build site
	run: \|
	cd docs/site/homepage
	hugo -D --minify --themesDir ../..
	cd -

	# Step 4: Fetch the old/ directory from gh-pages branch
	- name: Fetch old/ directory from gh-pages
	run: \|
	mkdir temp
	cd temp
	git init
	git remote add origin https://github.com/${{ github.repository }}
	git fetch origin gh-pages
	git checkout gh-pages
	cd ..
	cp -r temp/old docs/site/homepage/public/old \|\| echo "No old directory to copy"

	# Step 5: Deploy to gh-pages branch
	- name: Deploy to GitHub Pages
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: docs/site/homepage/public
	publish_branch: gh-pages

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