Cedarish
Heroku "Cedar-ish" Base Image for Docker
This is the source for a Docker image used for environments emulating the Heroku Cedar stacks. It's based on the official Heroku stack images scripts.
It doesn't include any buildpacks, just the base environment. This allows us to build a separate builder container and runner container. See Herokuish for emulating the rest of the Heroku build process.
Releases
Although the latest release is always available on Docker Hub, you can access versioned filesystem releases directly. Both a tar and gzipped tar are available. This allows you to ADD the tar directly from custom Dockerfiles, or manually import the gzipped tar for quicker downloads (docker import <release-url> progrium/cedarish).