Docker for Rails Developers

Generating a New Rails App Without Ruby Installed

Running a Ruby script was cool, but what else can we do?

Wouldn’t it be nice to start using Docker for some “real-world” tasks? Let’s imagine we want to create a new Rails project (that’s not so far-fetched…we are Ruby developers after all). Can we do that? You bet.

We’re going to want to run multiple commands in succession in a container in order to generate the Rails project. We could craft a really long, ugly docker run that executes the instructions one after another. However, that’s going to be hard to comprehend.

Instead, we can do something a little different. We can start a container running an interactive Bash shell. When we do this, we literally get a terminal session running inside ...