개발자 도구

Dockerfile 생성기

Node.js, Python, Go, Java, Rust 등을 위한 멀티스테이지 빌드 Dockerfile 생성

Language / Framework

node

Node.js

Configuration

Options

Multi-stage build

Reduces final image size

Non-root user

Security best practice

Healthcheck

Polls /health on port 3000

DockerfileNode.js · 20 lines
1# ─── Build stage ───────────────────────────────────────────
2FROM node:20-alpine AS builder
3WORKDIR /app
4COPY package*.json ./
5RUN npm ci
6COPY . .
7RUN npm run build
8
9# ─── Production stage ───────────────────────────────────────
10FROM node:20-alpine
11WORKDIR /app
12RUN addgroup -S app && adduser -S app -G app
13COPY --from=builder /app/dist ./dist
14COPY --from=builder /app/package*.json ./
15RUN npm ci --omit=dev && npm cache clean --force
16ENV NODE_ENV=production
17EXPOSE 3000
18USER app
19CMD ["node", "dist/index.js"]
20
UTF-8LFNode.js
multi-stagenon-root20 lines

Dockerfile Generator

Generate production-ready Dockerfiles for Node.js, Python, Go, Java, Rust, and more — with multi-stage builds, non-root users, .dockerignore, and best practices baked in.

FAQ

What is a Dockerfile?

A Dockerfile is a text file with instructions that Docker uses to build a container image — like a recipe for your app's environment.

What is a multi-stage build?

Multi-stage builds use multiple FROM instructions to separate build and runtime stages. The final image only contains what the app needs to run, making it much smaller and more secure.

Why use a non-root user in Docker?

Running containers as root is a security risk. If the container is compromised, an attacker would have root access. Use USER node (or similar) to run as a non-privileged user.

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