Docker is an open-source containerization platform by which you can pack your application and all its dependencies into a standardized unit called a container. Containers are light in weight which makes them portable and they are isolated from the underlying infrastructure and from each other container. You can run the docker image as a docker container in any machine where docker is installed without depending on the operating system. Containers simplify development and delivery of distributed applications. They have become increasingly popular as organizations shift to cloud-native development and hybrid multicloud environments. It’s possible for developers to create containers without Docker, by working directly with capabilities built into Linux and other operating systems.

Raised in Buenos Aires, Argentina, he’s a musician who loves languages (those you use to talk to people) and dancing. If you’re looking for a tool that can help you streamline your workflow and make your life as a developer and sysadmin easier, then Docker is a mandatory tool to add to your box. We’ll end this guide with some tips on best practices and handy commands for making the best use of Docker. By using this form you agree that your personal data would be processed in accordance with our Privacy Policy.

ML & Data Science

Docker developed a Linux container technology – one that is portable, flexible and easy to deploy. Docker open sourced libcontainer and partnered with a worldwide community of contributors to further its development. Kubernetes is an open-source container orchestration platform descended from a project developed for internal use at Google.

what is docker used for

In 1979, the Unix version 7 introduced a system call called chroot, which was the very beginning of what we know today as process virtualization. Different from Virtual Machines, a container can share the kernel of the operating system while only having their different binaries/libraries loaded with them. A lot of people think that Docker was the first of its kind, but this is not true What Is Docker – Linux containers have existed since the 1970s. Docker Desktop is a native application that delivers all of the Docker tools to your Mac or Windows Computer. Let’s now take a look at some of the components and tools that make it all possible. A virtual private server (VPS) offers more flexibility and customization than other hosting types, making it suitable for various needs.


In the above example, the docker create command would create a new container using the latest Fedora image. So, whenever you plan to deploy an application on the host, it would create a logical entity on it to host that application. In Docker terminology, we call this logical entity a Container or Docker Container to be more precise. Once you have created and edited the file and the Dockerfile, create your image to contain your application.

  • Eventually, you need to take a step back and group containers to deliver services—networking, security, telemetry, and more—across all of your containers.
  • It is a lightweight runtime system and the underlying client-server technology that creates and manages containers.
  • Virtual machines run a full copy of an operating system, whereas containers share the host kernel with other containers.
  • With Hub, you’ll get access to content from Docker, open source developer community contributors, and independent software vendors (ISVs) verified by Docker as authentic.
  • Users of Docker Hub can create a repository (repo) which can hold many images.

Kubernetes arose as a response to these challenges, providing a versatile and powerful platform to automate, orchestrate and manage container-based environments. Kubernetes has garnered a strong industry acceptance and has become the standard for enterprise container management. Its features include auto-scaling, lifecycle management, declarative system state management, resilience, self-healing, persistent storage for containers and load balancing.