Is your feature request related to a problem? Please describe.
Using github packages is time consuming, especially when one wishes to publish to a container. I had many issues with App Engine deployment. For instance, it was not obvious what the agrirouter url to refer to in settings.xml is. It also took me a long time to figure out that I explicitly har to enable Snapshots and releases in the settings.xml. Also, configuring settings.xml on a container was troublesome.

Describe the solution you'd like
Publish to Maven Central. This makes boilerplate such as mvn app-engine:deploy work without any issues.

Describe alternatives you've considered
Include documentation on how to add the github packages to user Maven settings. Add a boilerplate settings.xml somewhere. Include that you can use a local settings.xml when running Maven like so: mvn -s "settings.xml" (useful for container deployment).