Docker Best Practices for Production

# Docker Best Practices for Production

Optimize your Docker workflow with these production-ready practices.

## Multi-Stage Builds

Reduce image size:

```dockerfile
# Build stage
FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# Production stage
FROM node:18-alpine
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
EXPOSE 3000
CMD ["node", "dist/index.js"]
```

## Layer Caching

Optimize build times:

```dockerfile
# Copy package files first
COPY package*.json ./
RUN npm ci

# Then copy source code
COPY . .
RUN npm run build
```

## Security

Run as non-root user:

```dockerfile
RUN addgroup -g 1001 -S nodejs
RUN adduser -S nextjs -u 1001
USER nextjs
```