Docker is a tool that allows developers to package and deploy applications in isolated environments called containers. Containers provide a way to run applications in a lightweight and portable manner, without the need to install the application and its dependencies directly on the host operating system. Containers are created from Docker images, which are templates that specify the applications and dependencies that should be included in the container. Once a Docker image is built, it can be used to create as many containers as needed. Docker provides a number of benefits, including:
Isolation: Containers provide an isolated environment for running applications, which means that applications running in different containers do not interfere with each other.
Portability: Containers can be easily moved from one host to another, which makes it easy to deploy applications in different environments, such as development, staging, and production.
Lightweight: Containers are much smaller and more lightweight than traditional virtual machines, which means that they can be started and stopped quickly and use fewer resources.
Scalability: Docker allows you to run multiple containers on a single host, which makes it easy to scale applications horizontally by adding more containers as needed.
Overall, Docker is a powerful tool that allows developers to package and deploy applications in isolated environments, providing benefits such as isolation, portability, lightweight, and scalability.
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