Dockerfile generator

← All tools

Pick a stack and options — get a commented Dockerfile, matching .dockerignore, and docker build/run commands you can paste into your project.

~~~

Stack preset

~~~

Options

Node version

Package manager

Port

Multi-stage build — compile in a builder stage, copy only runtime files into the final image. Smaller images, no devDependencies in production.Non-root user — run the process as a dedicated user instead of root. Reduces damage if the container is compromised.

~~~

Output

Templates use current best practices: slim/alpine bases, copy lockfiles before source for layer caching, and npm ci (or equivalent) for reproducible installs. Adjust paths and start commands to match your project layout.

~~~

About this tool

A Dockerfile is the recipe Docker uses to build an image. Getting the layer order right — dependencies before source code — means rebuilds stay fast when you change application files but not package manifests.

Multi-stage builds compile in one stage and copy only what production needs into the final image. That keeps devDependencies, build caches, and source maps out of what you deploy.

Next.js standalone output bundles the server and dependencies into.next/standalone — the template assumes you setoutput: 'standalone' in next.config. Astro SSR expects the Node adapter and a dist/server/entry.mjs entry point after npm run build.

~~~

Dockerfiles — the full guide to FROM, COPY, RUN, and CMD
Docker first steps — install, images, containers
Docker Node container example
Dockerfile to run Astro Node SSR on fly.io

Dockerfile generator

Stack preset

Options

Output

About this tool

Read more