Very often I see developers completely give up on learning Docker because of the vocabulary. You read a tutorial and the author says: "Just build the Dockerfile into an Image, mount the Volume, map the Ports, and spin up the Container." If you don't have a DevOps background, that sounds like alien gibberish. The truth is, Docker is incredibly simple. It is just a virtual "shipping box" for your code. But because the creators of Docker invented their own terminology, it feels intimidating. If you want to deploy modern web apps (especially using tools like Kamal 2), you need to know what these words actually mean. Here is the absolute simplest translation of Docker jargon into plain English. 1. The Dockerfile (The Recipe) Imagine you are opening a bakery. The Dockerfile is your master recipe book. It is literally just a plain text file. It contains a list of instructions on exactly how to build your application's environment from a completely blank slate. It says: Buy an oven (Install Linux).…