This repository holds recipes for building Heroku stack images. The recipes are also rendered into Docker images that are available on Docker Hub:
| Image | Base | Type | Status |
|---|---|---|---|
| heroku/heroku:18 | ubuntu:18.04 | Heroku Runtime Stack Image | Deprecated |
| heroku/heroku:18-build | heroku/heroku:18 | Heroku Build Stack Image | Deprecated |
| heroku/heroku:18-cnb | heroku/heroku:18 | CNB Runtime Stack Image | Deprecated |
| heroku/heroku:18-cnb-build | heroku/heroku:18-build | CNB Build Stack Image | Deprecated |
| heroku/heroku:20 | ubuntu:20.04 | Heroku Runtime Stack Image | Available |
| heroku/heroku:20-build | heroku/heroku:20 | Heroku Build Stack Image | Available |
| heroku/heroku:20-cnb | heroku/heroku:20 | CNB Runtime Stack Image | Available |
| heroku/heroku:20-cnb-build | heroku/heroku:20-build | CNB Build Stack Image | Available |
| heroku/heroku:22 | ubuntu:22.04 | Heroku Runtime Stack Image | Suggested |
| heroku/heroku:22-build | heroku/heroku:22 | Heroku Build Stack Image | Suggested |
| heroku/heroku:22-cnb | heroku/heroku:22 | CNB Runtime Stack Image | Suggested |
| heroku/heroku:22-cnb-build | heroku/heroku:22-build | CNB Build Stack Image | Suggested |
See BUILD.md for instructions on how to build the images yourself.