diff --git a/Dockerfile b/Dockerfile
index e534dc4..4345143 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,7 +22,10 @@
 ############################
 # Build Stage
 ############################
-FROM golang:1.26-alpine AS build
+# Run the Go toolchain on the NATIVE build platform and cross-compile to the
+# target via GOOS/GOARCH below — avoids emulating an amd64 toolchain on arm64
+# hosts (QEMU segfaults during module download). No-op when build==target.
+FROM --platform=$BUILDPLATFORM golang:1.26-alpine AS build
 WORKDIR /src
 
 RUN apk add --no-cache git