Use st-asmvt pg tilegen in quickstart (#1193)

* Use generate-tiles-pg target in quickstart
* update makefile documentation

Makefile

@@ -181,7 +181,8 @@ Hints for developers:
   make generate-bbox-file              # compute bounding box of a data file and store it in a file
   make generate-devdoc                 # generate devdoc including graphs for all layers [./layers/...]
   make generate-qa                     # statistics for a given layer's field
-  make generate-tiles                  # generate vector tiles based on .env settings
+  make generate-tiles-pg               # generate vector tiles based on .env settings using PostGIS ST_MVT()
+  make generate-tiles                  # generate vector tiles based on .env settings using Mapnik (obsolete)
   cat  .env                            # list PG database and MIN_ZOOM and MAX_ZOOM information
   cat  quickstart.log                  # transcript of the last ./quickstart.sh run
   make help                            # help about available commands
@@ -414,6 +415,7 @@ import-sql: all start-db-nowait
 .PHONY: generate-tiles
 generate-tiles: all start-db
 	@$(assert_area_is_given)
+	@echo "WARNING: This Mapnik-based method of tile generation is obsolete. Use generate-tiles-pg instead."
 	@echo "Generating tiles into $(MBTILES_LOCAL_FILE) (will delete if already exists)..."
 	@rm -rf "$(MBTILES_LOCAL_FILE)"
 	$(DOCKER_COMPOSE) run $(DC_OPTS) generate-vectortiles
@@ -424,7 +426,7 @@ generate-tiles: all start-db
 .PHONY: generate-tiles-pg
 generate-tiles-pg: all start-db
 	@$(assert_area_is_given)
-	@echo "Generating tiles into $(MBTILES_LOCAL_FILE) (will delete if already exists)..."
+	@echo "Generating tiles into $(MBTILES_LOCAL_FILE) (will delete if already exists) using PostGIS ST_MVT()..."
 	@rm -rf "$(MBTILES_LOCAL_FILE)"
 	$(DOCKER_COMPOSE) run $(DC_OPTS) openmaptiles-tools generate-tiles
 	@echo "Updating generated tile metadata ..."

quickstart.sh

@@ -278,17 +278,10 @@ fi
 
 echo " "
 echo "-------------------------------------------------------------------------------------"
-echo "====> : Start generating MBTiles (containing gzipped MVT PBF) from a TM2Source project. "
+echo "====> : Start generating MBTiles (containing gzipped MVT PBF) using PostGIS. "
-echo "      : TM2Source project definitions : ./build/openmaptiles.tm2source/data.yml "
 echo "      : Output MBTiles: ./data/${area}.mbtiles  "
-echo "      : Source code: https://github.com/openmaptiles/openmaptiles-tools/tree/master/docker/generate-vectortiles "
+echo "      : Source code: https://github.com/openmaptiles/openmaptiles-tools/blob/master/bin/generate-tiles "
-echo "      : We are using a lot of Mapbox Open Source tools! : https://github.com/mapbox "
+make generate-tiles-pg
-echo "      : Thank you https://www.mapbox.com !"
-echo "      : See other MVT tools : https://github.com/mapbox/awesome-vector-tiles "
-echo "      :  "
-echo "      : You will see a lot of deprecated warning in the log! This is normal!  "
-echo "      :    like :  Mapnik LOG>  ... is deprecated and will be removed in Mapnik 4.x ... "
-make generate-tiles
 
 echo " "
 echo "-------------------------------------------------------------------------------------"