Tag the image that generate the Catalog sample data (#229)

Create a new image for the catalog sample in standalone mode

Author: liseli

common/docker/core.yml

@@ -9,7 +9,7 @@ x-healthcheck-defaults: &healthcheck-defaults
 services:
   solr-sdr-catalog:
     # This is a core service
-    image: ghcr.io/hathitrust/catalog-solr-sample:399beb50c4ab83d963abde50c349029c95182132
+    image: ghcr.io/hathitrust/catalog-solr-sample-standalone:solr-standalone
     ports:
     - "9033:9033"
     volumes: