Free agency tools / Dockerfile Generator
Generate a production Dockerfile
Answer a few questions and get a clean, multi-stageDockerfile with a slim base image and the right port — a sensible starting point you can ship, not a wall of boilerplate.
How it works
- 1Pick your stack and its version, then fill in the package manager, port and start command as needed.
- 2We generate a multi-stage Dockerfile (where it helps) with a slim official base image and production defaults.
- 3Copy it into your repo as `Dockerfile`, add a `.dockerignore`, and build.
Frequently asked
Why multi-stage builds?
For Node and static sites, one stage installs dependencies and builds, and a second, smaller stage copies only what runs. The final image is much smaller and doesn't ship build tools — faster to deploy and a smaller attack surface.
Do I still need a .dockerignore?
Yes — always add one with at least node_modules, .git and .env so they're not copied into the image. It keeps builds fast and secrets out of layers.
Is this production-ready as-is?
It's a solid starting point with sane defaults. Review the base-image tag, add a healthcheck and any build steps your app needs, and pin versions before shipping to production.
Which port should I use?
The port your app listens on inside the container. EXPOSE documents it; your host or orchestrator maps it to a public port. For static sites the bundled nginx listens on 80.