update to rails 7.1, move hosting away from fly.io #64

	name: CI
	on: [push, pull_request]

	jobs:

	tests:
	name: Tests
	runs-on: ubuntu-latest
	env:
	ENVKEY: ${{ secrets.ENVKEY }}
	RAILS_ENV: test
	POSTGRES_DB: rubydocs_test
	POSTGRES_HOST: localhost
	POSTGRES_PASSWORD: password
	POSTGRES_USER: rubydocs

	services:

	postgres:
	image: postgres:11
	ports:
	- 5432:5432
	# TODO: Unfortunately this service doesn't inherit the env vars from the job. Is there a way to fix this?
	env:
	POSTGRES_DB: rubydocs_test
	POSTGRES_HOST: localhost
	POSTGRES_PASSWORD: password
	POSTGRES_USER: rubydocs

	redis:
	image: redis
	options: --entrypoint redis-server
	ports:
	- 6379:6379

	steps:

	- name: Check out code
	uses: actions/checkout@v3
	with:
	submodules: true

	- name: Load env vars
	uses: rojopolis/envkey-action@master

	- name: Set up Ruby
	uses: ruby/setup-ruby@v1

	- name: Cache gems
	uses: actions/cache@v3
	with:
	path: vendor/bundle
	key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
	restore-keys: \|
	${{ runner.os }}-gems-

	- name: Install gems
	run: \|
	bundle config path vendor/bundle
	bundle install --jobs 4 --retry 3

	- name: Set up database
	run: \|
	cp config/database.yml.ci config/database.yml
	bundle exec rake db:setup

	- name: Run tests
	run: bin/rspec

Provide feedback