initial working version of stacks #600

	on:
	push:
	branches:
	- main
	paths:
	- core/**
	pull_request:
	branches:
	- main
	paths:
	- core/**
	env:
	MIX_ENV: test
	permissions:
	contents: read
	jobs:
	ci:
	runs-on: ubuntu-latest
	services:
	db:
	image: postgres:16
	env:
	POSTGRES_USER: postgres
	POSTGRES_PASSWORD: postgres
	POSTGRES_DB: canary_test
	options: >-
	--health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
	ports:
	- 5432:5432
	steps:
	- uses: actions/checkout@v3
	with:
	sparse-checkout: core
	- uses: arduino/setup-task@v2
	- uses: erlef/setup-beam@v1
	with:
	version-file: core/.tool-versions
	version-type: strict
	- uses: actions/cache@v3
	id: cache-deps
	env:
	cache-name: cache-elixir-deps
	with:
	path: core/deps
	key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
	restore-keys: \|
	${{ runner.os }}-mix-${{ env.cache-name }}-
	- uses: actions/cache@v3
	id: cache-build
	env:
	cache-name: cache-compiled-build
	with:
	path: core/_build
	key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
	restore-keys: \|
	${{ runner.os }}-mix-${{ env.cache-name }}-
	${{ runner.os }}-mix-
	- if: github.run_attempt != '1'
	run: \|
	mix deps.clean --all
	mix clean
	shell: sh
	- run: mix deps.get
	working-directory: core
	- run: mix compile --warnings-as-errors
	working-directory: core
	- run: mix format --check-formatted
	working-directory: core
	- run: mix test
	working-directory: core

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