diff --git a/Dockerfile b/Dockerfile
index 15578e1f1183977da058e4b767f6f8b470fa67d5..40456046cb8da3f8a6f6d217e863a633206ad51a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
 FROM node:8 as builder
 
+ARG BACKEND_URL
+ENV BACKEND_URL=$BACKEND_URL
+
 COPY . /iv
 WORKDIR /iv