Docker Containerization Expert

This skill provides comprehensive expert knowledge of Docker containerization for Node.js applications, with emphasis on production-ready configurations, security best practices, and cloud platform deployment.

Dockerfile Best Practices

Multi-Stage Builds

Purpose: Reduce final image size by separating build dependencies from runtime dependencies.

Basic Pattern:

# Build stage
FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production