Dockerfile Generator

Generate production-ready Dockerfiles with multi-stage builds, health checks, non-root users, and best practices. Templates for Node.js, Python, Go, Rust, and static sites.

DevOpsFree • No Signup

Base Image

Working Directory

Expose Port

Copy Files First

Build Command

Start Command (CMD)

System Packages (apt/apk)

Environment Variables (KEY=value, one per line)

Best Practices

Multi-stage build (smaller image)

Non-root user (security)

HEALTHCHECK instruction

Dockerfile

Docker

# Stage 1: Install dependencies
FROM node:20-alpine AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production

# Stage 2: Build
FROM node:20-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# Stage 3: Production
FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
RUN addgroup --system --gid 1001 appgroup && adduser --system --uid 1001 appuser
COPY --from=deps /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package.json ./
USER appuser
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/ || exit 1
CMD ["node", "dist/index.js"]

Key Features

Free to use
No registration required
Works offline
Privacy-focused
Fast processing

Use Cases

Development workflow

Quick data processing

Learning and experimentation

The Dockerfile Generator is designed for developers, engineers, and technical professionals who need a fast, reliable, and privacy-focused solution. All processing happens locally in your browser—your data never leaves your device.

Frequently Asked Questions

Have more questions about Dockerfile Generator?

Dependency Analyzer

Analyze and visualize project dependencies

DevOps

Try it

Docker Compose Generator

Generate Docker Compose files with visual interface

DevOps

Try it

Env File Manager

Create and manage .env files for different environments

DevOps

Try it

JSON Formatter

Format and validate your JSON with syntax highlighting

Code & Dev

Try it

Code Beautifier

Format and beautify code in various languages

Code & Dev

Try it

Base64 Encoder/Decoder

Encode or decode Base64 strings and files

Data & Format

Try it

Key Features

Use Cases

Frequently Asked Questions

Why use multi-stage builds?

Why add a non-root user?

What are health checks?

Which base images are recommended?