What does Docker do? (Key Functions)
Docker is a powerful platform that simplifies the development, deployment, and management of applications by leveraging containerization. Here's how Docker streamlines the entire process from packaging to execution.
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1. Containerization and Image Creation - Docker packages applications and their dependencies into portable containers using images, which contain everything needed to run the application.
2. Container and Resource Management - Docker manages the lifecycle of containers, ensuring efficient use of system resources by sharing the host OS across multiple containers.
3. Isolation and Security - Docker provides isolation between containers and the host system, ensuring that each container operates in a secure, independent environment.
4. Portability - Docker containers run consistently across various environments, whether on-premises, in the cloud, or on a local machine.
5. Networking and Volume Management - Docker facilitates secure communication between containers and manages data storage through volumes, ensuring data persistence and sharing.
6. Continuous Integration/Continuous Deployment (CI/CD) Integration - Docker integrates with CI/CD pipelines to automate the testing, building, and deployment of containerized applications.
7. Repository Management - Docker Hub and other registries store and distribute Docker images, enabling easy sharing and collaboration on containerized applications.
8. Self-Healing and Monitoring - Docker supports self-healing mechanisms and integrates with monitoring tools to manage container health and performance.
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