Use stable branches for gz-rendering8 and sdformat14 (#68) #145

	---
	name: CI

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.8', '3.10']

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --ignore=D101,D102,D103 --max-complexity=10 --max-line-length=127 --statistics
	- name: Test plugins _TEST.py
	run: \|
	python3 plugins/*_TEST.py
	- name: Smoke system tests
	run: \|
	python3 gzdev.py repository list
	python3 gzdev.py ign-docker-env citadel
	python3 gzdev.py ign-docker-env dome --linux-distro ubuntu:bionic
	python3 gzdev.py ign-docker-env dome --linux-distro ubuntu:focal --vol /tmp:/foo::/tmp:/bar --rocker-args '--dev-helpers'

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