feat: Improve naming for image built via schedule

.gitlab-ci.yml

@@ -85,7 +85,7 @@ workflow:
       if [ $CI_PIPELINE_SOURCE == 'merge_request_event' ]; then
         export PKR_VAR_image_name="${PROXY_NAME}-PR-${CI_MERGE_REQUEST_IID}"
       elif [ $CI_PIPELINE_SOURCE == 'schedule' ]; then
-        export PKR_VAR_image_name="PROXY-${BUILD_DATE}"
+        export PKR_VAR_image_name="${PROXY_NAME}-${BUILD_DATE}"
       fi
     # Ansible var overrides
     - |