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Create optimized Docker containers with multi-stage builds, security best practices, and minimal image sizes. Use when containerizing applications, creating Dockerfiles, optimizing container images, or setting up Docker Compose services.
| name | docker-containerization |
| description | Create optimized Docker containers with multi-stage builds, security best practices, and minimal image sizes. Use when containerizing applications, creating Dockerfiles, optimizing container images, or setting up Docker Compose services. |
Build production-ready Docker containers following best practices for security, performance, and maintainability.
Minimal working example:
# Multi-stage build for Node.js application
# Stage 1: Build
FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
RUN npm run build
# Stage 2: Production
FROM node:18-alpine
WORKDIR /app
# Copy only production dependencies and built files
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
COPY package*.json ./
# Security: Run as non-root user
RUN addgroup -g 1001 -S nodejs && adduser -S nodejs -u 1001
USER nodejs
EXPOSE 3000
CMD ["node", "dist/index.js"]
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Multi-Stage Builds | Multi-Stage Builds |
| Optimization Techniques | Optimization Techniques |
| Security Best Practices | Security Best Practices, Environment Configuration |
| Docker Compose for Multi-Container | Docker Compose for Multi-Container |
| .dockerignore File | .dockerignore File |
| Python | Python (Django/Flask), Java (Spring Boot), Go |
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