Add Lets Encrypt container images #518

	---
	name: Build documentation
	on:
	pull_request:
	jobs:
	docs-build:
	name: Build documentation
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: 3.x
	- run: pip install -r docs-requirements.txt
	- run: mkdocs build

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