Remove `rails` dependency, slim down the dummy app, and upgrade dependencies #64

	name: CI

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	ruby: ['3.2']
	gemfile:
	- gemfiles/rails_7_0.gemfile
	- gemfiles/rails_7_1.gemfile
	services:
	postgres:
	image: postgres
	env:
	POSTGRES_USER: runner
	POSTGRES_HOST_AUTH_METHOD: trust
	POSTGRES_DB: with_transactional_lock_test
	DB_ADAPTER: postgresql
	# Set health checks to wait until postgres has started
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	# Maps tcp port 5432 on service container to the host
	- 5432:5432
	mysql:
	image: mysql:5.7
	env:
	MYSQL_ALLOW_EMPTY_PASSWORD: yes
	MYSQL_DATABASE: with_transactional_lock_test
	DB_ADAPTER: mysql
	ports:
	- 3306:3306
	options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=3

	steps:
	- uses: actions/checkout@v3
	- uses: ruby/setup-ruby@v1
	env:
	BUNDLE_GEMFILE: ${{ matrix.gemfile }}
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true # runs 'bundle install' and caches installed gems automatically
	- name: Run tests
	env:
	BUNDLE_GEMFILE: ${{ matrix.gemfile }}
	run: bundle exec rake

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