While we use the module directly here in local development, it feels very hidden and disconnected from the rest of Addons. Users looking to report issues with the injection are probably looking at our main repository or the Addons repository. This module might be better authored and maintained in one of those locations instead.

I encountered this wanting to add tests to the script

• Add tests for Addons injection #225

It seems like we'd need:

• Move to Addons repo or separate repo entirely?
• Community/commercial Dockerfile checks out or reuses ${PWD}/${RTDDEV_PATH_ADDONS:-../addons}:/usr/src/app/checkouts/addons similar to other repo reuse
• Docker compose builds addons inject wrangler image from Git HTTPS URL
• Wrangler uses configuration file instead of hardcoded configuration in docker compose
• CircleCI config