Dockerfile Generator
Production-ready Dockerfiles with multi-stage, lightweight image and non-root user. The .dockerignore is included too.
FROM node:22-alpine WORKDIR /app RUN addgroup --system app && adduser --system --ingroup app app COPY package*.json ./ RUN npm ci COPY . . USER app EXPOSE 3000 CMD ["npm", "start"]
node_modules .git .env* *.log Dockerfile .dockerignore dist
Built by
Miguel Ángel Colorado Marin (MACM)
Built by
Miguel Ángel Colorado Marin (MACM)
Full-Stack Developer · Guadalajara, España
I develop web apps, digital tools and full projects — from design to deployment.
A good Dockerfile makes the difference between a slow-to-deploy 1.5 GB image and a 150 MB one that starts in seconds. This generator builds the Dockerfile for your stack applying industry best practices: multi-stage builds so the final image excludes build dependencies, ordered layers to maximize cache hits (dependencies first, then your code), lightweight base images like Alpine or distroless, and a non-root user to reduce attack surface. Next.js uses the official standalone mode; Go and Rust produce minimal final images with no runtime. The matching .dockerignore is generated along with the Dockerfile.
Features
- ✓6 templates: Node.js, Next.js, Vite, Python, Go and Rust
- ✓Multi-stage builds where applicable
- ✓Non-root user on by default
- ✓.dockerignore generated alongside
- ✓Alpine, Slim or Bookworm variants
How to generate a Dockerfile?
- 1
Pick your project type
Node, Next.js, static React/Vite, Python, Go or Rust.
- 2
Configure the options
Image variant, package manager, port and non-root user.
- 3
Copy the files
Dockerfile at the project root with .dockerignore beside it.
- 4
Build the image
Run docker build -t myapp . and check the final size.
Frequently asked questions
Why use multi-stage?
The compiler, headers and build tools are only needed while compiling. With multi-stage you copy just the final artifact into a clean image: smaller size, smaller attack surface and faster deploys.
Which base image variant should I choose?
Alpine is the smallest but uses musl libc, which can affect uncommon native packages. Slim is a safe middle ground with glibc. Use Bookworm only if you need full system libraries.
Is everything generated in my browser?
Yes, the Dockerfile is composed locally from your options. Nothing is sent to any server.
Related tools
Embed Dockerfile Generator on your site
Add Dockerfile Generator to any web page with a simple iframe. Free, with attribution to miguelacm.es.
<iframe
src="https://miguelacm.es/embed/dockerfile-generator"
width="100%"
height="700"
frameborder="0"
title="Dockerfile Generator — miguelacm.es"
></iframe>