docs: update datadog_checks_dev installation guide #480

	name: Build

	permissions:
	contents: write
	pull-requests: write

	on:
	pull_request:
	release:
	types:
	- published

	jobs:
	build_wheels:
	name: Build wheels on Ubuntu 20.04
	runs-on: ubuntu-20.04
	if: github.event_name == 'release' && github.event.action == 'published'
	steps:
	- uses: actions/checkout@v2
	# Include all history and tags, needed for building the right version
	with:
	fetch-depth: 0

	- uses: actions/setup-python@v2
	name: Install Python
	with:
	python-version: '3.9'

	- name: Install datadog_checks_dev
	run: \|
	python -m pip install datadog_checks_dev[cli]==20.0.1

	- name: Set ddev pypi credentials
	run: \|
	ddev config set pypi.user __token__
	ddev config set pypi.pass ${{ secrets.PYPI_TOKEN }}

	- name: Publish the wheel to PyPI
	run: \|
	ddev release upload . --sdist

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