Docker

Resource Link: https://www.linode.com/docs/guides/when-and-why-to-use-docker/

For this week I decided to research and write about what exactly docker is and what it’s used for in commercial applications or projects. With how much we use docker in class, I was curious as to what its other applications were and how it was used it other settings. I was curious about this because I had never heard of docker or used docker before this class, and it seems like such a useful and important piece of software. Even with just what we’ve covered so far in class, it appears to be very versatile and suitable to a variety of different applications.

This article summarizes what docker is, when and how it originated, the benefits of docker, and when and when not to use docker. I chose this article because it provides all the necessary information in a clean and concise way. While many other resources about docker were bloated and included lots of unnecessary information, this one has just the right amount of information to inform a user about what docker is, how to learn more about it, and how to get started using it. This makes it a great resource for someone new to docker, who maybe just heard about it and doesn’t know exactly what it is.

First, the article provides details about what docker is and when it was released. Docker was released in 2012, and since has become an important technology in web development. This was surprising to me because I figured I would have heard about such a big and important technology in web development, at least in one of my other classes. I figured that since I hadn’t heard of it, it must be a newer technology, but it’s already 9 years old. However, it does make sense that it would be a fast growing piece of software because of its versatility and ease of use. It makes the process of setting up and configuring a web server much simpler than it would be otherwise, and it makes monitoring those web servers easy through the docker application.

Next, the article delves into some of the benefits of docker. The benefits include reproducibility, isolation, security, docker hub, environment management, and continuous integration. Isolation helps to avoid conflicts between docker containers that may require different dependencies or installations. Security is increased because if a single docker container is compromised, other docker containers won’t be affected. Also, different containers means that different versions of a project can be maintained independently, for example for testing. The docker hub makes it easy to find and use certain images, also leading to ease of setting up a docker container. Finally, docker can be used as a part of tools like Jenkins, meaning that when an update is made, it can automatically be saved and pushed to docker hub as an image, and put right into deployment.

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