Renamed the_engine to rabotnik

README.rst

-=============================
-Docker the-engine message bus
-=============================
+===========================
+Docker rabotnik message bus
+===========================
 
 This is a Docker container for a main message bus for instances of
-`the-engine <https://git.gfz-potsdam.de/dynamicexposure/the-engine/the-engine>`__
+`rabotnik <https://git.gfz-potsdam.de/dynamicexposure/rabotnik/rabotnik>`__
 based on `rabbitmq <https://www.rabbitmq.com/>`__.
 
 Copyright and copyleft