shipshitdev Docker Expert
When to Use
- Dockerfile creation for NestJS/Next.js
- docker-compose configuration
- Container networking and volumes
- Multi-stage builds optimization
- Health checks and restart policies
- MongoDB/Redis container setup
Dockerfile Best Practices
NestJS Multi-Stage Build
FROM node:20-alpine AS base
WORKDIR /app
FROM base AS deps
COPY package*.json ./
RUN npm ci
FROM base AS builder
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build
FROM base AS runner
ENV NODE_ENV=production
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
EXPOSE 3001
CMD ["node", "dist/main.js"]
Next.js Dockerfile
FROM node:20-alpine AS base
WORKDIR /app
FROM base AS deps
COPY package*.json ./
RUN npm ci
FROM base AS builder
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build
FROM base AS runner
ENV NODE_ENV=production
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json
EXPOSE 3000
CMD ["npm", "start"]
Docker Compose Patterns
Development Setup
- Use volumes for live reload
- Mount source code
- Set restart: unless-stopped
- Configure networks
Production Setup
- Use named volumes for persistence
- Set restart policies
- Configure health checks
- Use secrets management
MongoDB with Docker Compose
services:
mongodb:
image: mongo:7.0
container_name: mongodb
restart: unless-stopped
ports:
- "27017:27017"
environment:
MONGO_INITDB_ROOT_USERNAME: ${MONGO_ROOT_USERNAME}
MONGO_INITDB_ROOT_PASSWORD: ${MONGO_ROOT_PASSWORD}
volumes:
- mongodb_data:/data/db
networks:
- app-network
command: mongod --auth
Health Checks
healthcheck:
test: ["CMD", "curl", "-f", "http://localhost:3001/health"]
interval: 30s
timeout: 10s
retries: 3
start_period: 40s
Best Practices
- Use multi-stage builds to reduce image size
- Leverage layer caching
- Use .dockerignore
- Set appropriate restart policies
- Use health checks for containers
- Mount volumes for persistent data
- Use networks for service isolation