additional kernel pkgs.

Dockerfile

@@ -7,7 +7,8 @@ RUN sed -i 's@deb.debian.org@apt-cache.lan/deb.debian.org@g' /etc/apt/sources.li
     apt-get update -y && \
 	apt-get install -y build-essential dpkg-dev dpkg-cross \
 	devscripts gcc make ccache distcc flex bison \ 
-	gcc-arm-linux-gnueabihf gcc-arm-linux-gnueabi && \
+	gcc-arm-linux-gnueabihf gcc-arm-linux-gnueabi \
+	bc rsync kmod cpio libssl-dev:native && \
 	apt-get remove --purge -y exim* && \
 	apt-get autoremove --purge -y && \
 	apt-get clean -y && \