# Docker for Node.js Applications
Learn how to containerize your Node.js applications with Docker.
## Creating a Dockerfile
Here's a basic Dockerfile for Node.js:
```dockerfile
FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
EXPOSE 3000
CMD ["node", "dist/main.js"]
```
## Multi-stage Builds
Optimize your Docker images:
```dockerfile
# Build stage
FROM node:18-alpine AS builder
WORKDIR /app
COPY . .
RUN npm ci && npm run build
# Production stage
FROM node:18-alpine
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY package*.json ./
RUN npm ci --only=production
CMD ["node", "dist/main.js"]
```
## Docker Compose
Orchestrate multiple containers:
```yaml
version: '3.8'
services:
app:
build: .
ports:
- "3000:3000"
db:
image: postgres:14
environment:
POSTGRES_PASSWORD: password
```
Docker for Node.js Applications
Complete guide to containerizing Node.js applications with Docker.
#docker#nodejs#devops#containers