Docker

Introduction If you work with containers, you probably know Docker. But in recent years, an interesting competitor has emerged: Podman. Developed by Red Hat, Podman promises to do everything Docker does, but differently and, according to some, better. In this article, we’ll analyze the real differences between the two, without fanaticism, to help you understand which tool is right for you. What is Podman? Podman (Pod Manager) is a tool for managing containers and pods, developed by Red Hat as an open source alternative to Docker. Its main feature? It doesn’t need a daemon running. ...

The Problem: Containers Are Ephemeral Before talking about volumes, you need to understand a fundamental concept: Docker containers are ephemeral. What does this mean? Imagine you have a container running a database. You insert data, everything works perfectly. Then you stop the container, restart it, and… the data is gone. Poof, vanished. This happens because each container has its own isolated filesystem that lives and dies with the container itself. It’s like writing on sand: as soon as the wave comes, everything disappears. ...

Introduction If you work in software development or IT, you’ve surely heard of Docker. But what exactly is it and why is everyone talking about it? In this guide, I’ll explain Docker in simple terms, without unnecessary technicalities. What is Docker? Docker is an open source platform that allows you to create, distribute and run applications inside containers. But what does this mean in practice? Imagine you’re moving house. You have two options: ...