some large-ish refactoring

docker-compose.yml

@@ -154,7 +154,7 @@ services:
 
   skirmish-api:
     image: skirmish
-    command: ["lein", "run", "webserver"]
+    command: ["lein", "run", "api-server"]
     depends_on:
       - kafka-topics-ui # basically, we need all kafka
     environment:
@@ -162,3 +162,14 @@ services:
       KAFKA_BOOTSTRAP_SERVERS: "kafka1:9092"
     ports:
        - "1602:1602"
+
+  skirmish-exchange-core:
+    image: skirmish
+    command: ["lein", "run", "exchange-core"]
+    depends_on:
+      - skirmish-api # basically, we need all kafka
+    environment:
+      PORT: 1602  # https://en.wikipedia.org/wiki/Euronext_Amsterdam
+      KAFKA_BOOTSTRAP_SERVERS: "kafka1:9092"
+    ports:
+       - "1602:1602"