diff --git a/.github/workflows/container-example.yml b/.github/workflows/container-example.yml
index 7c7cd6f..e0d4863 100644
--- a/.github/workflows/container-example.yml
+++ b/.github/workflows/container-example.yml
@@ -35,6 +35,6 @@ jobs:
           cd $EXNAME
           docker pull --platform=${{ matrix.platformarch}} alpine:$alpinetag
           docker save -o alpine.tar alpine:$alpinetag
-          docker build --no-cache --tag $imagetag --output build .
+          docker build --no-cache --tag $imagetag --build-arg ARCH=${{ matrix.arch }} --output build .
           cd ..
           docker image rm -f $imagetag