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🌟 How Do You Containerize a Node.js Application Using Docker?

Containerizing a Node.js app with Docker ensures it runs consistently across different environments — from development to production!

✅ Dockerfile Setup: Define the base image (e.g., Node), copy your app files, install dependencies, and set the start command.

✅ Create an Image: Build your app into a lightweight, portable Docker image.

✅ Run Containers: Launch containers from your image, running your Node.js app in an isolated environment.

✅ Port Mapping: Expose your app's port (e.g., 3000) to the host machine so users can access it.

✅ Environment Variables: Pass environment-specific configs securely through Docker.

✅ Docker Compose: Manage multi-container setups (e.g., Node.js + MongoDB) with one simple config file.

💡 Docker makes deployment faster, more scalable, and environment-independent! 🎉

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