How to run RSpec on GitHub Actions for Ruby on Rails app using parallel jobs

GitHub Actions makes it easy to automate all your software workflows with world-class CI/CD. Building, testing, and deploying your code right from GitHub became available with simple YAML configuration.You can even create a few YAML config files to run a different set of rules on your CI like scheduling daily CI builds. But let’s focus strictly on how to get running tests for Rails app on GitHub Actions.Setup Ruby on Rails.