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Docker Explained for Beginners
Complete Containerization Guide
What is Docker?
Docker is a tool that packages applications into containers. Containers include everything needed to run an application: code, runtime, libraries, and dependencies. This ensures your application runs the same way everywhere.
Why use Docker?
Docker provides:
- Consistency - Works the same on dev, staging, and production
- Portability - Run anywhere: laptop, server, cloud
- Faster deployments - Start containers in seconds
Is Docker required for DevOps?
Yes. Docker is a core DevOps skill. Almost every modern application uses containers, and Docker is the most popular containerization platform. You cannot work in DevOps without Docker knowledge.
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