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 # Project ZILE Sweets
 
-The ZILE Sweets project is a demo project. ZILE is the name of a virtual bonbon manufacturer and
-also the name of the toplevel `LocationGroup` in the project. The project comprises a
-flatgood (carton) stock with a small automatic conveyor system in front to serve
+The ZILE Sweets project is a demo project. ZILE is the name of a virtual candy maker and
+also the name of the toplevel `LocationGroup` in the project. ZILE receives palettes of
+ingredients, like sugar, flavor etc., to make the best candys on the continent.
+
+# System Design
+
+The project comprises a flatgood (carton) stock with a small automatic conveyor system in front to serve
 the picking (commissioning) stations with cartons. Feeding the stock happens manually by putting
 cartons onto an infeed position (I-Point). Beside the automatic flatgood stock, a palett stock
 and a kanban stock exists as well. Transportation between the three types of stock happens with
 manual transports.
 
-# System Layout
-
 ![Layout][1]
 
 # System Architecture
 
+ZILE project is a composition of microservices. The project configuration is kept in
+this GitHub repository. All connections to control units of the material flow system are handled
+by OSIP TCP/IP drivers. Each aisle has it's own Raspberry Pi controller that talks to the server
+and drives physical infeed and outfeed operations. The palett conveyor has a dedicated material
+flow controller as well as the flat good conveyor has. Incoming OSIP telegrams are transformed by
+the corresponding driver component and send to the TMS Routing service that decides which workflow
+is executed to handle the telegram message. Therefore it uses the Location service and the Transportation
+service to gather information about the active `TransportOrder` and `Route`.
+
 ![SA][2]
 
+The Activiti Explorer belongs to the group of infrastructure services and is used to create new
+workflows or modify existing ones at runtime. Also the Service Registry and Configuration service
+are infrastructure components used to connect all microservices and to apply configuration to them.
+
+For distributed logging ZipKin server and ELK are used.
 
 # Installation
 
+All microservices may started as Spring Boot processes, from command line via `java -jar ...` or as
+single Docker containers or as a Docker compose project.
+
+## Docker compose
+
+All services are pre-built and available as Docker container from Docker Hub:
+
+https://hub.docker.com/u/openwms/
+https://hub.docker.com/u/interface21/
+
+First clone the GitHub repository and run docker compose to fetch all containers.
+
+```
+docker-compose up -d
+```
+
+This command starts up all containers in the background and returns to the shell. Now we can monitor the logs
+in common or for each single container:
+
+```
+docker-compose logs -f
+docker-compose logs -f routing-service
+```
+
 # Development
 
 ```
-docker-compose up -d --build
 docker run -d --name srv -p 8761:8761 <IMAGE ID>
 docker run -d --name cfg -p 8099:8099 <IMAGE ID>
 ```