ci: add changed-files for mkdocs #14

	# This is a mostly a copy-paste from https://github.com/squidfunk/mkdocs-material/blob/master/docs/publishing-your-site.md

	name: mkdocs

	on:
	push:
	branches:
	- main
	workflow_dispatch:

	permissions:
	contents: write

	jobs:
	deploy:
	runs-on: ubuntu-latest
	env:
	REPO_URL: '${{ github.server_url }}/${{ github.repository }}'
	REPO_NAME: '${{ github.repository }}'
	SITE_URL: 'https://${{ github.repository_owner }}.github.io/InvokeAI'

	steps:
	- name: checkout
	uses: actions/checkout@v4

	- name: check for changed docs
	if: ${{ github.event_name != 'workflow_dispatch' && github.event_name != 'workflow_call' }}
	id: changed-files
	uses: tj-actions/changed-files@v42
	with:
	files_yaml: \|
	docs:
	- 'docs/**'

	- name: setup python
	if: ${{ steps.changed-files.outputs.docs_any_changed == 'true' }}
	uses: actions/setup-python@v5
	with:
	python-version: '3.10'
	cache: pip
	cache-dependency-path: pyproject.toml

	- name: set cache id
	if: ${{ steps.changed-files.outputs.docs_any_changed == 'true' }}
	run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV

	- name: use cache
	if: ${{ steps.changed-files.outputs.docs_any_changed == 'true' }}
	uses: actions/cache@v4
	with:
	key: mkdocs-material-${{ env.cache_id }}
	path: .cache
	restore-keys: \|
	mkdocs-material-

	- name: install dependencies
	if: ${{ steps.changed-files.outputs.docs_any_changed == 'true' }}
	run: python -m pip install ".[docs]"

	- name: build & deploy
	if: ${{ steps.changed-files.outputs.docs_any_changed == 'true' }}
	run: mkdocs gh-deploy --force

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