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Dockerfile Generator

Generate production-ready Dockerfiles for Node.js, Python, Go, Rust, Java, and more. Multi-stage builds, slim base images, and non-root user defaults built in.

Last updated:

Base Image
Working Directory
Expose Port
Dockerfile
FROM node:22-alpine
WORKDIR /app
COPY . .
RUN npm ci --omit=dev
EXPOSE 3000
CMD ["node", "dist/index.js"]

How to Use Dockerfile Generator

  1. 1Select your base image from the dropdown (Node.js, Python, Go, etc.).
  2. 2Configure the working directory, port, and multi-stage build option.
  3. 3Review the generated Dockerfile in the output panel.
  4. 4Click "Copy" to copy the Dockerfile to your clipboard.

Frequently Asked Questions

What is a multi-stage build?

A multi-stage build uses multiple FROM statements in a single Dockerfile. The build stage compiles your application, and the final stage copies only the built artifacts into a minimal runtime image, significantly reducing the image size.

Which base images are supported?

Node.js, Python, Go, Rust, Java, Ruby, PHP, Nginx, Ubuntu, and Alpine. Each uses the latest stable version with the smallest available variant (alpine or slim).

Is this generated locally?

Yes. The Dockerfile is generated entirely in your browser. No data is sent to any server.

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