Creating a CTF Machine with Docker and Docker Compose: A Step-by-Step Guide

Let’s Try To Create one

In this blog, we’ll explore how to create a Capture The Flag (CTF) machine using Docker and Docker Compose. We’ll build a vulnerable Ubuntu-based machine with a web interface, SSH access, and a path traversal vulnerability. This machine will allow users to exploit the vulnerability, escalate privileges, and retrieve flags. Along the way, we’ll explain what Docker and Docker Compose are, how they work, and why they’re essential tools for modern development and security testing.

What is Docker?

Docker is a containerization platform that allows developers to package applications and their dependencies into lightweight, portable containers. These containers can run consistently across different environments, from a developer’s laptop to a production server.

Key Concepts of Docker

Containers:

• Containers are isolated environments that include everything needed to run an application: code, runtime, libraries, and system tools.
• Unlike virtual machines, containers share the host system’s kernel, making them lightweight and fast.

Images:

• An image is a read-only…