route LiteLLM through shared Caddy network

servers/bwh-hk-cmi/litellm/compose.yaml

@@ -19,7 +19,10 @@ services:
     depends_on:
       adc-init:
         condition: service_completed_successfully
-    network_mode: host
+    networks:
+      hk-web:
+        aliases:
+          - litellm-api
     environment:
       GOOGLE_APPLICATION_CREDENTIALS: /credentials/application_default_credentials.json
       VERTEXAI_PROJECT: ${VERTEXAI_PROJECT}
@@ -28,7 +31,7 @@ services:
     volumes:
       - ./config.yaml:/app/config.yaml:ro
       - google-adc:/credentials:ro
-    command: ["--config", "/app/config.yaml", "--host", "${LISTEN_IP:-127.0.0.1}", "--port", "${LITELLM_PORT:-1049}"]
+    command: ["--config", "/app/config.yaml", "--host", "0.0.0.0", "--port", "${LITELLM_PORT:-1049}"]
     logging:
       driver: json-file
       options:
@@ -37,3 +40,8 @@ services:
 
 volumes:
   google-adc:
+
+networks:
+  hk-web:
+    external: true
+    name: hk-web