What Are Docker Containers and What Can You Use Them For?

There has been quite a lot of talk about Docker lately, and it is important that you know exactly what it is and the uses for it. It is essentially a tool that can be used for the purpose of creating, deploying and executing applications via containers. With the help of containers, developers can package apps with everything necessary to run properly. When you use a Docker, you can be absolutely certain that the application you have created will run on any Linux machine, regardless of customized settings.

Who should use Docker?

One of the truly great things about Docker is that it is designed to be of great use to developers and system administrations alike. Developers who use this tool can put their minds at ease, as they won’t need to be concerned about how their apps will run on other systems. This lets developers increase their productivity in a big way by using a program that is meant to be used in one of these containers as one aspect of their app. Those who are in charge of operations will love Docker because of how it so dramatically cuts back on the need to hire other people.

Setting up local development environments

Docker containers allow developers to run local development environments that mirror the production server. Once you are all done with writing the code and have put it to the test, you can wrap it in one of these containers and publish it right to your private cloud. It will work immediately and perfectly because the whole of the environment will be the exactly the same. While LXC can be helpful, it is fraught with all sorts of problems. You will be able to run what you want on your system, but there is a good chance it won’t run like it should once you put it on the server. These containers can be very helpful in this sense.

You decide the Parameters

When you are using Docker containers, you will be able to decide how much memory, CPU and other resources a container can utilize. While it’s true that a container is by no means a new idea, Docker takes it to the next level in a big way. By having the freedom to assign these parameters to each environment, you will be able to perfect your applications.

Virtualization on the Operating System Level

The main thing that makes Docker so unique is that it offers virtualization for developers on the operating system level as opposed to going directly on top of the hardware. You will find that these containers run the user space on the OS’s kernel. One of the reasons that this is such a revolutionary concept is because of how much faster it makes everything. Traditional virtualization is becoming less and less common with the innovation of Docker.

Making Configuration Simple

The main purpose of Docker is to make configuration as simple and easy as possible. You will get everything you would from a virtual machine without all of the overhead, which is a huge benefit indeed. You will be able to run your applications across numerous IaaS and PassS without all of the additional work. You will finally be able to put your environment into code and deploy it without anything holding you back.

Consolidating Servers

Similar to having a virtual machine consolidate numerous apps, this function with Docker will let you consolidate many different servers so you don’t have to spend nearly as much money. It is important to keep in mind that the consolidation you get with Docker is going to be significantly denser than with traditional VMs. You will have lots of useful features at your fingertips with Docker containers though, so it’s important to keep that in mind.

Final Thoughts

There is simply no question that Docker containers have become extremely popular recently, and that there are plenty of uses for them. If you want to make your life a whole lot easier and less expense as a developer, these containers are worth taking a close look at. It has been proven that there are numerous real world uses for Docker, so you won’t have to worry about not getting enough out of it. This tool will provide you with many opportunities to increase your productivity in a very noticeable way. The more time you take to look into these containers, the happier you are going to be.


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