Rack provides a minimal, modular, and adaptable interface for developing web applications in Ruby. In this episode, we create and insert our own Rack Middleware into a Rails 6 application.

Learn to use Docker to manage our Ruby interpreter and use it to template new Rails applications.

Learn how to build avatars with initials and conditionally prefer Gravatar images if they exist.

As developers, chances are we are in the terminal often. Command Line Interfaces (CLI), are very helpful in streamlining our work. Ruby is a very powerful language and can make some powerful CLIs. Thor is a powerful option, but in this episode, we look at some alternatives from basic to more advanced scenarios.

We may come across a need to run shell commands and Ruby has some built in methods which appear safe, but can introduce major security risks.