diff --git a/Dockerfile b/Dockerfile
index 2e295ac48..15490cfc9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,7 +23,7 @@ EORUN
 
 FROM golang:1.24-alpine AS go-build
 
-ARG GOPROXY=
+ARG GOPROXY=""
 
 RUN <<EORUN
 #!/bin/sh -e