diff --git a/testhelper.Dockerfile b/testhelper.Dockerfile
index f4a85ab..edd5951 100644
--- a/testhelper.Dockerfile
+++ b/testhelper.Dockerfile
@@ -1,7 +1,7 @@
 FROM golang:latest as build
 COPY testhelper.go /go/testhelper.go
 RUN go get -u github.com/lib/pq
-RUN go build testhelper.go
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build testhelper.go
 
 FROM scratch
 COPY --from=build /go/testhelper /testhelper