Multi-Stage Docker Build Explained 🔥 | Reduce Image Size Like Real DevOps Engineers #dockerfile

🚀 Learn Multi-Stage Docker Build (Beginner-Friendly Explanation)

Most beginners think multi-stage Docker builds are complicated… but they’re not.

In this video, I’ll show you how to reduce Docker image size, remove unnecessary build tools, and create production-ready images using a simple Node.js example.

📦 What you’ll learn in this video:

Why normal Docker images become heavy
What is a multi-stage Docker build
Difference between build stage and production stage
Real-world Node.js + Nginx example
How DevOps engineers optimize Docker images

🧑‍💻 Topics Covered:

FROM with AS keyword
Builder stage concept
Copying from one stage to another
Reducing image size
Production-ready Docker images

🔧 Example Used:

Node.js application build stage
Nginx production stage
Clean separation between build and runtime

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⏱️ Timestamps:
00:00 Why Multi-Stage Sounds Scary
00:25 Problem with Normal Docker Builds
01:10 What is Multi-Stage Build
02:00 Real Node Example – Builder Stage
03:00 Production Stage with Nginx
04:00 Why It’s Production Best Practice

🔖 Related Videos:

Dockerfile Explained for Beginners - https://www.youtube.com/shorts/HOsXUS1238s
CMD Vs EntryPoint - https://www.youtube.com/shorts/vWAsF1u0CKM
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Видео Multi-Stage Docker Build Explained 🔥 | Reduce Image Size Like Real DevOps Engineers #dockerfile канала Rishabh Mishra DevOps