diff --git a/Dockerfile b/Dockerfile
index 4645d06..cfc607b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
 FROM golang:alpine AS build
+#----------------- prime --
 ARG VERSION
 RUN wget \
   --output-document "/cointop-$VERSION.tar.gz" \