Docker: Cleanup code comments

processing.Dockerfile

@@ -1,20 +1,10 @@
 FROM ubuntu:mantic as lua
 
-# Install Lua and "luarocks" – Lua package manager – https://luarocks.org/, https://packages.ubuntu.com/luarocks
+# Install Lua and "luarocks" (Lua package manager) – https://luarocks.org/, https://packages.ubuntu.com/luarocks
 RUN apt update && apt install -y lua5.3 liblua5.3-dev luarocks
 
-# RUN luarocks install date
 RUN luarocks install busted
 
-# LUA Libaries:
-# - "dkjson" used by parking.lua to write JSON for debugging
-# RUN luarocks install dkjson
-# TODO: We need to find a way to use those packages locally; otherwise using them does not make much sense
-# - "inspect" https://github.com/kikito/inspect.lua
-#   (recommended in https://github.com/openstreetmap/osm2pgsql/blob/master/flex-config/README.md#dependencies)
-# RUN luarocks install inspect
-# - "date" https://luarocks.org/modules/tieske/date, https://github.com/Tieske/date
-
 FROM lua as processing
 
 ARG DEBIAN_FRONTEND=noninteractive