diff --git a/Dockerfile b/Dockerfile
index f5f92a9..6b6c2bb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -117,7 +117,7 @@ RUN \
                     import -window root "$fileName"; \
                     tiv -w 10000 -h 10000 "$fileName"; \
                     x="$(expr "$x" + 1)"; \
-                    echo $x; \
+                    echo "Frame #$x"; \
                     sleep 1; \
                 done; \
                 # Kill installer after timeout indicated by `maxCount`