Nightly build docker stuff, specifically for use with things at Travis via packer-templates.
- This repository is enabled on travis-ci.org with nightly (daily) cron builds.
- When a given job succeeds, and is on the
masterbranch, and is not a pull request job, the resulting docker image is pushed to Docker Hub. - The generated images are used as the
FROMimage during docker (packer) builds of higher-level images, mostly as a way of saving time by cutting down on duplicate work.