feature #8778 Update service_container for 4.0 (weaverryan)

This PR was merged into the 4.0 branch.

Discussion
----------

Update service_container for 4.0

This was already updated by Javier, but it also needed a reword to *really* emphasize the new way of doing things.

Commits
-------

6308688 Updating the content of service_container

Author: weaverryan