Dockerfile Generator — free online tool
Writing a Dockerfile from scratch is fiddly. You half-remember the base image, the order of the steps, how to keep it small, and you end up copying bits from old projects. We added a free tool that does it for you — Dockerfile Generator — right in your browser.
What it does
Pick your stack and it gives you a clean Dockerfile, ready for a multi-stage build, plus a matching docker-compose.yml. It supports Node, Python and other common setups, so you get a sensible starting point instead of a blank file.
Nothing leaves your device
Everything happens in your browser. Your choices and the files it makes stay on your computer. Nothing is uploaded, nothing is saved on a server. When you close the tab, it's gone.
How to use it
- Open Dockerfile Generator and choose your stack, like Node or Python.
- Adjust the options to match your project.
- Copy or download your Dockerfile and docker-compose.yml.
It's free with no limit. There are more small tools on the Apps page.