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Docker

Docker is a containerization platform that enables the creation, deployment, and running of applications in lightweight, portable containers. It streamlines software development and deployment by isolating applications and their dependencies, ensuring consistency across different environments.

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Frequently asked questions
  • What is Docker?

    Docker is an open-source platform that automates the deployment, scaling, and management of applications within lightweight, portable containers. Containers encapsulate an application and its dependencies, ensuring consistency across different environments.

  • How do Containers differ from Virtual Machines (VMs)?

    Containers are more lightweight than virtual machines. While VMs emulate an entire operating system, containers share the host OS kernel, making them faster to start, use fewer resources, and offer better performance for microservices-based applications.

  • What is the significance of Docker Images?

    Docker Images are lightweight, standalone, and executable packages that contain everything needed to run a piece of software, including the code, runtime, libraries, and dependencies. Images are the basis for containers and are stored in a registry, such as Docker Hub.

  • How does Docker facilitate microservices architecture?

    Docker simplifies the deployment and management of microservices by packaging each microservice and its dependencies into a container. This enables consistent and isolated deployment of microservices, making it easier to scale, update, and manage the entire application.

  • What is Docker Compose, and how does it simplify multi-container applications?

    Docker Compose is a tool for defining and running multi-container Docker applications. It allows users to define services, networks, and volumes in a YAML file, making it easy to manage complex applications with multiple interconnected containers.

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