Adding overview image and improving service list

documentation/operator-guide/intro.rst

@@ -13,10 +13,14 @@ knowledge of Docker and Docker Swarm is a prerequisite.
 Components
 ----------
 
+.. figure:: images/architecture.png
+
 The View Server consists of the following service components (with their
 respective Docker image in parenthesis):
 
- - Ingestor (ingestor)
+.. - Ingestor (ingestor) TODO: re-add this
+
+ - Reverse Proxy (traefik)
  - Preprocessor (preprocessor)
  - Registrar (core)
  - Renderer (core)
@@ -24,7 +28,7 @@ respective Docker image in parenthesis):
  - Seeder (cache)
  - Client (client)
  - Database (postgis)
- - Redis (redis)
+ - Queue Manager (redis)
  - Reverse Proxy (traefik)
 
 These services are bundled and managed together in a Docker Swarm via