diff --git a/testhelper.Dockerfile b/testhelper.Dockerfile
index 1d13b0a..f4a85ab 100644
--- a/testhelper.Dockerfile
+++ b/testhelper.Dockerfile
@@ -1,7 +1,8 @@
-FROM golang:latest
-COPY testhelper.go /
+FROM golang:latest as build
+COPY testhelper.go /go/testhelper.go
+RUN go get -u github.com/lib/pq
 RUN go build testhelper.go
 
 FROM scratch
-COPY --from=build /testhelper /testhelper
+COPY --from=build /go/testhelper /testhelper
 ENTRYPOINT ["/testhelper"]