using configurable variable

Author: Paurikova2

docker/docker-compose-rest.yml

@@ -54,7 +54,7 @@ services:
       assetstore__P__s3__P__pathStyleAccessEnabled: ${S3_PATH_STYLE_ACCESS:-false}
       assetstore__P__s3__P__endpoint: ${S3_ENDPOINT:-}
       # CNRI Handle prefix
-      handle__P__prefix: 10084
+      handle__P__prefix: ${HANDLE_PREFIX:-10084}
     image: ${DSPACE_REST_IMAGE:-dataquest/dspace:dtq-dev-7.5}
     networks:
       - dspacenet