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Day-03 - Docker Multi-Stage Builds:

 Day-03 - Docker Multi-Stage Builds:

Day-03
 Today, I explored Docker Multi-Stage Builds:

Why Multi-Stage Builds:
 Reduce image size, improve performance, and keep only what’s needed for production.

Creating the Dockerfile:
1. Two stages:
A). Installer Stage (Node.js) → Install dependencies, build app
B). Deployer Stage (NGINX) → Copy only /build directory

2. Building the Docker Image:
 Command: docker build -t multi-stage .
3. Produces a lean, production-ready image without unnecessary files.
Running & Inspecting the Container:

4. Command: docker run -dp 3000:3000 multi-stage
 Check logs & explore:
/usr/share/nginx/html → contains only build artifacts
/var/log/nginx → access & error logs

Key Takeaway:
 Multi-stage builds make Docker images smaller, faster, and secure, following best DevOps practices.

Read More: https://lnkd.in/d-StMz_G



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