5 Reasons Why DOCKER is so Important?

Docker is an open platform for developing, shipping, and running applications. Docker helps you deliver software quickly by enabling you to separate your applications from your infrastructure. With Docker, you can manage your infrastructure in the same way you manage your applications. Developer teams can significantly reduce the delay between writing code and running it in production by taking advantage of Docker’s methodologies for shipping, testing, and deploying code quickly, When talking about Docker, there are 2 main terms that will surely pop up in the conversation: "Docker image" and "Docker container."

To explain it in the simplest way we can, we would say, "A Docker image is a file used to execute code in a Docker container." Docker images serve as a template, like a set of instructions for creating a Docker container. When using Docker, the starting point is also a set of images. A snapshot and an image are similar concepts in virtual machine (VM) environments. Users can specify the dependencies and configurations of an application, as well as everything needed for a computer to run that application, using both containers and images. The life cycles of containers and images, however, are different. To understand the concept of a Docker image and a Docker container, read The Difference Between a Docker Image and a Docker Container.?

Why do you need Docker??

• Improved and seamless container portability: In contrast to LXC containers, which frequently make use of machine-specific configurations, Docker containers can be used in any desktop, data center, or cloud environment without the need for modification.?
• Lighter in weight and more granular updates: Multiple processes can be consolidated into a single container using LXC. This makes it possible to create applications that can function even when one of their components is offline for maintenance or repair.
• Automated container creation: Docker can automatically build a container based on the application source code.?
• Container versioning: Docker has the ability to track changes made to a container image, revert to a previous version, and discover who made a version and how. Even just the differences between an existing version and a new version can be uploaded.
• Container reuse: like templates, existing containers can be used as base images—essentially for building new containers.?
• Shared container libraries: Developer teams can access an open-source registry containing thousands of user-contributed containers.?

Docker is of great importance today. Along with the added bonus of running multiple apps (containers) concurrently on the same machine, it offers a mechanism for managing dependencies that allow each project or application to be isolated with all of its dependencies in a separate container.

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