I built "boss levels" for my Linux & Docker game: you're on call and prod is down

An enterprising developer has created a unique gaming experience that simulates the challenges of managing a Linux and Docker environment. The game, called DockerLinux, allows users to practice their skills in a safe and controlled setting.

In the game, players are tasked with resolving various incidents that occur within a simulated production environment. For example, a server reboot or a failed deployment can cause the "shop" application to become unavailable. Players must use real Docker commands such as docker ps -a, docker start, docker network inspect, and more to diagnose and fix the issue. The game provides a runbook with hints and a postmortem for each incident, detailing the time, root cause, and lessons learned.

The game consists of four levels, each focusing on a different aspect of Docker and Linux management. As players progress through the levels, they unlock more complex incidents to tackle. For instance, Level 5 teaches players about container lifecycle management, while Level 6 covers networking and port configuration. The final two levels deal with building Docker images and deploying applications correctly.

The game runs entirely in the browser, with a simulated Docker daemon, file system, and virtual machine. This allows players to practice their skills without needing to install Docker locally. The incidents are simulated data, and players can retry their solutions as many times as needed.

The game's developer believes that DockerLinux serves as an excellent training ground for real-world production issues. By practicing in a controlled environment, developers can learn to calmly analyze logs, identify the root cause, and implement the correct solution under pressure. The game also highlights the differences between the simulated environment and real production systems, helping players understand potential pitfalls.

To experience the game, simply visit dockerlinux.com and start playing. Once you've completed Level 5, you'll be able to type "oncall" to enter the pager mode and take on the first incident.