add pip cache #481

	# This is a basic workflow to help you get started with Actions

	name: Build Documentation

	on: [push]

	jobs:
	build-linux:
	runs-on: ubuntu-latest
	strategy:
	max-parallel: 5

	steps:
	- uses: actions/checkout@v4
	- name: Setup pip cache
	uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('*/requirements.txt') }}
	- name: Set up Python 3.10
	uses: actions/setup-python@v2
	with:
	python-version: "3.10"
	- name: set up Pandoc
	uses: r-lib/actions/setup-pandoc@v2
	with:
	pandoc-version: "3.1.11" # The pandoc version to download (if necessary) and use.
	- name: Add conda to system path
	run: \|
	# $CONDA is an environment variable pointing to the root of the miniconda directory
	echo $CONDA/bin >> $GITHUB_PATH
	- name: Install dependencies
	run: \|
	conda install -y python=3.10
	conda env update --file .github/additional_files/environment.yml --name base
	- name: Install package
	run: \|
	pip install ./
	- name: Install Sphinx and additional dependences
	run: \|
	sudo apt install pandoc
	pip install sphinx>7.3.0 sphinx-rtd-theme==1.3.0 sphinx-autodoc-typehints sphinx-argparse>=0.5.2 nbsphinx renku-sphinx-theme
	- name: Generate Documentation
	run: \|
	cd docs_source
	make clean
	make html

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