New containers automatically get database with CREATE EXTENSION ... executed for all postgis related extensions. This results in the creation of numerous tiger-related tables, and possibly other unneeded cruft.

I would like to propose that postgis image by default should not run any CREATE EXTENSION statements, with the possible exception of the postgis extension itself -- after all we can safely assume that if a user picked postgis docker, they need it.

The extra extensions should still be packaged with the image to make their installation simpler.