YunoJuno Heroku Stack Images

Holds the Docker recipes for building YunoJuno's Heroku stack images, which we use during development & testing. Production uses Heroku's buildpack system because it means we lean on them for security updates to the underlying stack.

Images

Dockerfile	Base	repo/image:tag
Dockerfile	heroku/heroku:20	yunojuno/heroku:3.9-latest
Dockerfile	heroku/heroku:22	yunojuno/heroku:3.10-latest
Dockerfile	heroku/heroku:22	yunojuno/heroku:3.11-latest

CI

GitHub Actions runs our CI and automatically builds and pushes the generated image on all pushes to master, and on a scheduled basis daily.

PRs also run the build, but just to check that it can succesfully built - the resulting image does not result in a pushed image.