Enable Cron

This environment was derived from [altis/local-server](https://github.com/humanmade/altis-local-server), which uses cavalcade for Cron management; after removing that, I've observed that Cron tasks are not running locally unless manually triggered. This appears to be due to a missing loopback to enable the cron task to resolve the hostname within the Docker container.

Start by inspecting the Docker-based local development environment and how Cron tasks resolve their hostname inside the container. Reproduce the issue without manually triggering Cron, then verify that Cron tasks run locally once the loopback resolution is addressed.

Written by the indexing model from the issue text.