3. What is Docker

Question

3. What is Docker

Accepted Answer

Docker is an open-source platform that allows you to automate the deployment, scaling, and management of applications using containerization.

Docker is a containerization technology that packages applications and their dependencies into isolated containers.
It provides a lightweight and portable environment for running applications consistently across different systems.
Docker allows for easy deployment and scaling of applications, as containers can be quickly created, started, stopped, and moved between environments.
It helps in achieving application isolation, resource efficiency, and faster deployment cycles.
Docker uses a client-server architecture, where the Docker client communicates with the Docker daemon to build, run, and manage containers.
Docker images are used to create containers, and these images can be shared and reused across different environments.
Docker Hub is a public registry that hosts a wide range of Docker images, allowing users to easily access and use pre-built images.
Docker Compose is a tool that allows defining and running multi-container Docker applications using a YAML file.
Docker Swarm is a native clustering and orchestration solution for Docker, enabling the creation and management of a swarm of Docker nodes.
Docker has become a popular choice for DevOps engineers due to its ability to streamline the development, testing, and deployment processes.

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