add postgres #4

	name: Test backend

	on:
	push:
	paths:
	- "backend/**"
	- ".github/workflows/test-backend.yml"

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	cache: "pip"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt --no-cache-dir
	working-directory: backend
	- name: Lint with Ruff
	run: \|
	pip install ruff
	ruff --output-format=github .
	continue-on-error: true
	working-directory: backend
	- name: Create docker network
	run: docker network create test_network
	- name: Start MongoDB
	run: docker run -d --network test_network --name mongo -p 27017:27017 mongo:latest
	- name: Start Postgres
	run: docker run -d --network test_network --name postgres -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=postgres -e POSTGRES_DB=postgres -p 5432:5432 postgres:16.3-alpine3.20
	- name: Build app image
	run: cp .env.dev .env && docker build -t districtr .
	working-directory: backend
	- name: Test
	run: docker run --network test_network -e MONGODB_SERVER=mongo --rm districtr ./test.sh

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