add support for openwebui (#487)

demos/use_cases/llm_routing/arch_config.yaml

@@ -8,6 +8,7 @@ listeners:
     timeout: 30s
 
 llm_providers:
+
   - name: gpt-4o-mini
     access_key: $OPENAI_API_KEY
     provider_interface: openai
@@ -17,6 +18,7 @@ llm_providers:
     access_key: $OPENAI_API_KEY
     provider_interface: openai
     model: gpt-4o
+    default: true
 
   - name: ministral-3b
     access_key: $MISTRAL_API_KEY
@@ -27,7 +29,6 @@ llm_providers:
     access_key: $ANTHROPY_API_KEY
     provider_interface: claude
     model: claude-3-7-sonnet-latest
-    default: true
 
   - name: claude-sonnet-4
     access_key: $ANTHROPY_API_KEY

demos/use_cases/llm_routing/docker-compose.yaml

@@ -1,17 +1,15 @@
 services:
 
-  chatbot_ui:
-    build:
-      context: ../../shared/chatbot_ui
-      dockerfile: Dockerfile
+
+  open-web-ui:
+    image: ghcr.io/open-webui/open-webui:main
+    restart: always
     ports:
-      - "18080:8080"
+      - "8080:8080"
     environment:
-      - CHAT_COMPLETION_ENDPOINT=http://host.docker.internal:12000/v1
-    extra_hosts:
-      - "host.docker.internal:host-gateway"
-    volumes:
-      - ./arch_config.yaml:/app/arch_config.yaml
+      - DEFAULT_MODEL=gpt-4o-mini
+      - ENABLE_OPENAI_API=true
+      - OPENAI_API_BASE_URL=http://host.docker.internal:12000/v1
 
   jaeger:
     build: