Fix opacity calculation problem with the agg renderer (#5697) (#7085) #78

	name: Build and test Python MapScript

	on:
	push:
	branches:
	- '*'
	except:
	- /^(cherry-pick-)?backport-\d+-to-/

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.ref }}
	cancel-in-progress: true

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: [3.8, 3.9, "3.10", 3.11, 3.12]
	env:
	MAPSCRIPT_PYTHON_ONLY: 'true'

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

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: ./ci/setup.sh

	- name: Build
	run: ./ci/build.sh

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