diff --git a/Dockerfile b/Dockerfile
index 45dd2e2..e969c6e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ RUN apt-get -qq update && \
     apt-get clean && \
     useradd -m openwrt && \
     echo 'openwrt ALL=NOPASSWD: ALL' > /etc/sudoers.d/openwrt
-RUN sudo -iu openwrt git clone git://git.openwrt.org/15.05/openwrt.git
-RUN sudo -iu openwrt openwrt/scripts/feeds update
 USER openwrt
 WORKDIR /home/openwrt/openwrt
+RUN git clone git://git.openwrt.org/15.05/openwrt.git
+RUN openwrt/scripts/feeds update && rm -rf tmp