anchor.diff:  
   RUN mkdir -p /prl_tools && \
       curl -fL http://download.parallels.com/desktop/v${PRL_MAJOR}/${PRL_VERSION}/ParallelsTools-${PRL_VERSION}-${PRL_BUILD}-boot2docker.tar.gz \
  -        | tar -xzC /prl_tools --strip-components 1 &&\
  -    cd /prl_tools &&\
  -    cp -Rv tools/* $ROOTFS &&\
  +        | tar -xzC /prl_tools --strip-components 1 && \
  +    cd /prl_tools && \
  +    cp -Rv tools/* $ROOTFS && \
       \
       KERNEL_DIR=/linux-kernel/ KVER=$KERNEL_VERSION SRC=/linux-kernel/ PRL_FREEZE_SKIP=1 \
  -    make -C kmods/ -f Makefile.kmods installme &&\
  -    \
  -    find kmods/ -name \*.ko -exec cp {} $ROOTFS/lib/modules/$KERNEL_VERSION-boot2docker/ \;
  +        make -C kmods/ -f Makefile.kmods installme && \
  +    \
  +    find kmods/ -name '*.ko' -exec cp {} $ROOTFS/lib/modules/$KERNEL_VERSION-boot2docker/ ';'
  +
  +# verify that all the above actually worked (at least producing a valid binary, so we don't repeat issue #1157)
  +RUN chroot "$ROOTFS" prltoolsd -V
   
   # Build XenServer Tools
   ENV XEN_REPO https://github.com/xenserver/xe-guest-utilities
  
positive.code:     && make \
      && tar xvf build/dist/*.tgz -C $ROOTFS/
  
  # Make sure that all the modules we might have added are recognized (especially VBox guest additions)
  RUN depmod -a -b $ROOTFS $KERNEL_VERSION-boot2docker
  
  
negative.code: 
  # Building the Libdnet library for VMware Tools.
  ENV LIBDNET libdnet-1.12
  RUN curl -fL -o /tmp/${LIBDNET}.zip https://github.com/dugsong/libdnet/archive/${LIBDNET}.zip && \
      unzip /tmp/${LIBDNET}.zip -d /vmtoolsd && \
      cd /vmtoolsd/libdnet-${LIBDNET} && ./configure --build=i486-pc-linux-gnu && \
      make && \
      make install && make DESTDIR=$ROOTFS install
  
  # Horrible hack again
  RUN cd $ROOTFS/usr/local/lib && ln -s libdnet.1 libdumbnet.so.1 && readlink -f libdumbnet.so.1
  
  # TCL 7 doesn't ship with libtirpc.so.1 Dummy it up so the VMware tools work
  # again, taken from:
  # https://github.com/boot2docker/boot2docker/issues/1157#issuecomment-211647607
  RUN cd $ROOTFS/usr/local/lib && ln -s libtirpc.so libtirpc.so.1 && readlink -f libtirpc.so.1
  
  # verify that all the above actually worked (at least producing a valid binary, so we don't repeat issue #1157)
  RUN LD_LIBRARY_PATH=/lib:/usr/local/lib \
          chroot "$ROOTFS" vmhgfs-fuse --version
  
  # Download and build Parallels Tools
  ENV PRL_MAJOR 11
  ENV PRL_VERSION 11.1.0
  