improvement: direct use dns_cluster #17

	name: Elixir CI
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	workflow_call:

	permissions:
	contents: read

	jobs:
	build:
	name: Build and test
	runs-on: ubuntu-latest
	services:
	postgres:
	image: postgres
	env:
	POSTGRES_PASSWORD: postgres
	options: >-
	--health-cmd "pg_isready -U postgres"
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	- 5432:5432

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

	- name: Set up Elixir
	# https://github.com/erlef/setup-beam
	uses: erlef/setup-beam@v1
	with:
	version-file: .tool-versions
	version-type: strict

	- name: Restore dependencies cache
	uses: actions/cache@v4
	with:
	path: deps
	key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
	restore-keys: ${{ runner.os }}-mix-

	- name: Install dependencies
	run: mix deps.get --only test

	- name: Run tests
	run: mix test

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