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What is Docker and its benefits?

What is Docker and its benefits

Table of Contents

Introduction to Docker
What is the purpose of Docker?
How does Docker work?
Is Docker a virtual machine?
Components of Docker
Benefits of Docker

Introduction to Docker

Docker is the open-source containerization platform developers use to bundle applications into containers. Containers are standardized executable components that combine application source code with the operating system libraries and dependencies that are needed to run that code in any environment. In layman’s words, Docker is an open-source application development, deployment, and management environment for containers.

Containers are lightweight by design and can also be much faster than virtual machines. Users can use Docker containers to run software anywhere they want without worrying about performance or security.

You can refer to the following to understand better:

  1. https://www.youtube.com/watch?v=6NKqwvE0qxI&t=2s
  2. https://www.youtube.com/watch?v=aQXdfgjVBZo

What is the purpose of Docker?

To understand Docker, we must first and foremost comprehend the problem statement that Docker is attempting to address. This is because Docker’s only purpose whenever an application is built is to solve a specific problem or lessen the friction that users are currently experiencing with that problem.

There are several problems that presumably arise practically every time a developer creates an application. The issue is that anytime developers are developing an application, their machine-the developer machine-works flawlessly. However, as soon as the application is put into production-on servers or a computer, the application frequently fails to function when shifted from one location to another with the same performance, optimization, or degree of working.

The age-old problem is, “Will it run on my machine?” Docker was created expressly to solve this issue and operates on all platforms.

How does Docker work?

Docker is a platform that can help you host a variety of containers, but they are not just any containers—they are incredibly strong, densely packed, and include several different components. Your code, dependencies, configurations, processes, networking, and a portion of the operating systems that are in charge of modifying various aspects of your code are all crammed into these containers.

Almost any programming language and application you are working on are compatible with Docker. The very core of Docker is its ability to create completely isolated, completely sealed containers. Your entire code is wrapped up in these containers, which are completely transportable. Portability is one of its most appealing features. Now that you have this container, you can place it wherever and it will function completely and precisely as it did on the developer’s machine. Additionally, Docker enables you to create social containers that can be shared, like your Facebook or Instagram status. You can upload these containers to a social platform using it.

Is Docker a virtual machine?

Docker is simply a configuration management tool, not a virtual machine. All running containers share the host OS kernel in Docker. Contrarily, a virtual machine is not built on container technology.

Components of Docker:

The following are the components of a Docker:

Components of Docker

Benefits of Docker:

Some of the benefits that Docker provides are:

  • Portability: Docker’s portability is its primary appeal. Once your containerized application has been tested, you may deploy it to any other system that is running Docker and be confident that it will function the same as it did during testing.
  • Compatibility: Docker is compatible with almost any programming language or application you are working on.
  • Simple and fast configurations: Since Docker can be used with a wide range of technologies, the requirements of the infrastructure are no longer related to the application’s environment, and it is easy to configure.
  • Isolation: The very core of Docker is its ability to create completely isolated, completely sealed containers. Your entire code is wrapped up in these containers, which are completely transportable.
  • Productivity: Docker offers repeatable environments for development, building, testing, and production. You can version control and commit changes to your Docker images using Docker, and engineers can better identify and address application bugs due to this. Additionally, Docker is rapid, making it simple to create replications and establish redundancy.
  • Scalability: In the event that demand for your apps increases, you can immediately generate new containers. There are numerous container management options available when employing multiple containers.
  • Security: One of the main advantages of Docker is security. It ensures that any application running in a container is totally isolated from every other application, giving you whole control over traffic flow and administration and separation from other applications.
  • Return on Investment (ROI): One of the most noticeable benefits of Dockers is its Return on Investment (ROI). Because of the nature of Docker, the same application can be executed with fewer resources. Additionally, it enables engineering teams to be more efficient and smaller, allowing them to concentrate on their primary business.
  • Automated container creation: Based on the source code of an application, Docker can automatically create a container.

How can InfosecTrain help?

InfosecTrain is a well-known global IT security and technology training and consulting service provider. You can enroll in our Docker Certified Associate (DCA) training course to learn more about Dockers, one of the most well-liked container-based platforms that are catching the attention of many development teams. The training is a simple method to improve your knowledge about Docker. The Docker Certified Associate (DCA) certification, which is regarded as a core benchmark for practical Docker abilities throughout the container industry, can be earned with the help of this course.

Docker Certified Associate (DCA) certification

Monika Kukreti ( )
Infosec Train
Monika Kukreti holds a bachelor's degree in Electronics and Communication Engineering. She is a voracious reader and a keen learner. She is passionate about writing technical blogs and articles. Currently, she is working as a content writer with InfosecTrain.
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