anchor.diff:  
   # These steps can only be run once, so can't be in make_iso.sh (which can be run in chained Dockerfiles)
   # see https://github.com/boot2docker/boot2docker/blob/master/doc/BUILD.md
  -RUN    \
  -# Make sure init scripts are executable && \
  -	find $ROOTFS/etc/rc.d/ $ROOTFS/usr/local/etc/init.d/ -exec chmod +x '{}' ';' && \
  -# Download Tiny Core Linux rootfs  && \
  -	( cd $ROOTFS && zcat /tcl_rootfs.gz | cpio -f -i -H newc -d --no-absolute-filenames ) && \
  -# Change MOTD && \
  -	mv $ROOTFS/usr/local/etc/motd $ROOTFS/etc/motd && \
  -# Make sure we have the correct bootsync && \
  -	mv $ROOTFS/boot*.sh $ROOTFS/opt/ && \
  -	chmod +x $ROOTFS/opt/*.sh && \
  -# Make sure we have the correct shutdown && \
  -	mv $ROOTFS/shutdown.sh $ROOTFS/opt/shutdown.sh && \
  -	chmod +x $ROOTFS/opt/shutdown.sh && \
  -# Add serial console && \
  -	echo "#!/bin/sh" > $ROOTFS/usr/local/bin/autologin && \
  +
  +# Make sure init scripts are executable
  +RUN find $ROOTFS/etc/rc.d/ $ROOTFS/usr/local/etc/init.d/ -exec chmod +x '{}' ';'
  +
  +# Download Tiny Core Linux rootfs
  +RUN cd $ROOTFS && zcat /tcl_rootfs.gz | cpio -f -i -H newc -d --no-absolute-filenames
  +
  +# Change MOTD
  +RUN mv $ROOTFS/usr/local/etc/motd $ROOTFS/etc/motd
  +
  +# Make sure we have the correct bootsync
  +RUN mv $ROOTFS/boot*.sh $ROOTFS/opt/ && \
  +	chmod +x $ROOTFS/opt/*.sh
  +
  +# Make sure we have the correct shutdown
  +RUN mv $ROOTFS/shutdown.sh $ROOTFS/opt/shutdown.sh && \
  +	chmod +x $ROOTFS/opt/shutdown.sh
  +
  +# Add serial console
  +RUN echo "#!/bin/sh" > $ROOTFS/usr/local/bin/autologin && \
   	echo "/bin/login -f docker" >> $ROOTFS/usr/local/bin/autologin && \
   	chmod 755 $ROOTFS/usr/local/bin/autologin && \
   	echo 'ttyS0:2345:respawn:/sbin/getty -l /usr/local/bin/autologin 9600 ttyS0 vt100' >> $ROOTFS/etc/inittab && \
  -	echo 'ttyS1:2345:respawn:/sbin/getty -l /usr/local/bin/autologin 9600 ttyS0 vt100' >> $ROOTFS/etc/inittab && \
  -# fix su - && \
  -	echo root > $ROOTFS/etc/sysconfig/superuser
  +	echo 'ttyS1:2345:respawn:/sbin/getty -l /usr/local/bin/autologin 9600 ttyS0 vt100' >> $ROOTFS/etc/inittab
  +
  +# fix "su -"
  +RUN echo root > $ROOTFS/etc/sysconfig/superuser
   
   # Copy boot params
   COPY  rootfs/isolinux /tmp/iso/boot/isolinux
  
positive.code:         rm -f /tmp/$dep.tcz ;\
      done
  
  COPY VERSION $ROOTFS/etc/version
  RUN cp -v $ROOTFS/etc/version /tmp/iso/version
  
  
negative.code: COPY rootfs/make_iso.sh /
  
  RUN /make_iso.sh
  
  CMD ["cat", "boot2docker.iso"]
  