Which language presets are available?

Node (npm/yarn/pnpm), Python (pip/poetry), Go, Rust, Java (Maven/Gradle). Each has a multi-stage template optimized for that ecosystem.

Does it follow security best practices?

Yes — non-root user, multi-stage build, minimal base images (alpine or distroless), no sudo, explicit COPY over ADD, cache-friendly layer ordering.

What about `.dockerignore`?

The tool generates a matching `.dockerignore` for the chosen language — skips node_modules, __pycache__, .git, and other bloat.

Can I customize the base image?

Yes — pick from the curated options (alpine, distroless, debian-slim, scratch-compatible) or specify your own. The rest of the Dockerfile adjusts accordingly.

Dockerfile Generator | DevTools Surf

DevTools Surf

Example: Dockerfile Generator

A worked example, rendered from real sample data. Sign in to run the tool on your own input.

Input

lang=node version=20 port=3000

Output

# syntax=docker/dockerfile:1.7
FROM node:20-alpine AS base
WORKDIR /app

FROM base AS deps
COPY package*.json ./
RUN npm ci --omit=dev

FROM base AS build
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM base AS runtime
COPY --from=deps /app/node_modules ./node_modules
COPY --from=build /app/dist ./dist
USER node
EXPOSE 3000
CMD ["node", "dist/server.js"]

About Dockerfile Generator

Dockerfile Generator preview - Generators tool

Multi-stage Dockerfile for Node / Python / Go — production-ready. Part of the DevTools Surf developer suite. Browse more tools in the Generators collection.

Use Cases

Bootstrap a Dockerfile for a new service
Compare best-practice patterns across stacks
Get a minimal base image for a small CI container
Teach junior engineers multi-stage build patterns

Tips

Multi-stage builds dramatically shrink final image size
The Node template uses npm ci for reproducible builds
The Go template uses distroless for minimal attack surface

Fun Facts

Docker images are stored as tar archives of layer diffs — pulling an image downloads only the layers you don't already have locally.
The Docker registry protocol is so simple that you can download an image with just curl commands — no Docker client needed.
Alpine Linux, the most popular Docker base image, is only 5 MB because it uses musl libc and BusyBox instead of glibc and GNU coreutils.

FAQ

Which language presets are available?: Node (npm/yarn/pnpm), Python (pip/poetry), Go, Rust, Java (Maven/Gradle). Each has a multi-stage template optimized for that ecosystem.
Does it follow security best practices?: Yes — non-root user, multi-stage build, minimal base images (alpine or distroless), no sudo, explicit COPY over ADD, cache-friendly layer ordering.
What about `.dockerignore`?: The tool generates a matching `.dockerignore` for the chosen language — skips node_modules, __pycache__, .git, and other bloat.
Can I customize the base image?: Yes — pick from the curated options (alpine, distroless, debian-slim, scratch-compatible) or specify your own. The rest of the Dockerfile adjusts accordingly.

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