I am following instructions in this link to make mvt file https://blog.jawg.io/how-to-make-mvt-with-postgis/
When I did the setup and ran generate-tiles.sh , I get the error that bbox function does not exist ERROR: function bbox(integer, integer, integer) does not exist LINE 8: BBox(16596, 11273, 15)
If you scroll that page, he is mentioning he is using a helper function and also has given the link. https://raw.githubusercontent.com/jawg/blog-resources/master/how-to-make-mvt-with-postgis/bbox.sql
I do not have experience with postgis and docker and hence I am stuck. So my question is, how do I load/install/mount the .sql file so that the script does not produce the error and can call the bbox function ?