we don't need iptables
diff --git a/containers/onboarding_synchronizer/Dockerfile b/containers/onboarding_synchronizer/Dockerfile
index 3860785..967e234 100644
--- a/containers/onboarding_synchronizer/Dockerfile
+++ b/containers/onboarding_synchronizer/Dockerfile
@@ -9,7 +9,8 @@
# This container must be started in privileged mode.
-RUN apt-get install -y curl iptables
+RUN apt-get install -y curl
+# iptables
ENV DOCKER_BUCKET=get.docker.com
ENV DOCKER_VERSION=1.8.3
ENV DOCKER_SHA256=f024bc65c45a3778cf07213d26016075e8172de8f6e4b5702bedde06c241650f