refactor demos (#398)

demos/samples_java/weather_forcecast_service/docker-compose.yaml

@@ -0,0 +1,20 @@
+services:
+  weather_forecast_service:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "18081:8081"
+
+  chatbot_ui:
+    build:
+      context: ../../shared/chatbot_ui
+      dockerfile: Dockerfile
+    ports:
+      - "18080:8080"
+    environment:
+      - CHAT_COMPLETION_ENDPOINT=http://host.docker.internal:10000/v1
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    volumes:
+      - ./arch_config.yaml:/app/arch_config.yaml