Update docker-compose.yaml, adding pull_policy=always for cardemo

Author: jovezhong

docker-compose.yaml

@@ -1,4 +1,3 @@
-version: '3'
 services:
   proton:
     image: ghcr.io/timeplus-io/proton:latest
@@ -18,10 +17,11 @@ services:
     volumes:
       - ./provisioning:/etc/grafana/provisioning
     depends_on:
-      - proton  
+      - proton
 
   carsharing_datagen:
     image: timeplus/cardemo:latest
+    pull_policy: always
     entrypoint: /bin/sh
     command: -c "sleep 15 && echo \"$$CONSOLE_CONFIG_FILE\" > /timeplus/sink.yaml;  /timeplus/cardemo --config /timeplus/.cardemo.yaml -f /timeplus/sink.yaml"
     environment: