Dockerfile Generator

What does this tool do?

The Dockerfile Generator provides production-ready Dockerfile templates for common stacks and lets you edit them right in the browser. It gives you optimized starting points for Node.js, Python, Go, Nginx and Next.js, including multi-stage builds and small alpine-based images. It's ideal for people new to containerization or developers who want a quick, sensible draft.

How to use it

1. Enter your configuration details.
2. Review the generated output.
3. Copy the ready-to-use code or file.

Ready-made templates for your stack

Switch between five templates with a single click. The Node template installs dependencies with npm ci and exposes port 3000; the Python template installs requirements.txt and launches with uvicorn; the Golang and Next.js templates use multi-stage builds to keep the final image small. The Nginx template serves a compiled dist/ folder as static files. Every template is fully editable in the text area so you can match your own conventions.

Shrink images with multi-stage builds

The Go and Next.js templates demonstrate AS builder stages that separate build tooling from the final image. This pattern dramatically reduces image size by copying only the compiled binary or the standalone output. You can see best practices directly, such as producing a static Go binary with CGO_ENABLED=0 or using Next.js's .next/standalone output. When you finish editing, copy the output and save it as Dockerfile in your project root.

Frequently asked questions