The Unix philosophy focuses on designing a small operating system with a clean service interface. To have such a system, simple, precise, clear, and modular software development should be undertaken, taking into consideration the developers and maintainers. Besides, the philosophy emphasizes that you should compose subsystems instead of creating a big, monolithic design.

With this idea, it is a conventional approach to separate the main application and run a couple of sidecars attached, which are provided for extra functionality. The main advantages of using a sidecar are as follows:

• They have independent programming languages and runtime dependencies
• They monitor the main application closely and minimize latency
• They extend black box applications

In the following activity, a web-based game will be installed in Kubernetes. As expected, there should be at least one container running the web server. However, there is an additional requirement of continuous source code synchronization.
With the Unix philosophy, it is expected to make containers with only one primary task. They should also work independently and together to achieve the necessary requirements. Finally, these containers should update their statuses, informing the console as log lines. All three of these points are covered in the following activity.