anchor.diff:  FROM resin/rpi-raspbian:wheezy
   MAINTAINER Markus Boese <markus.boese@gmail.com>
   
  +RUN mkdir -p /home/pi
  +
   # Set ENV vars
  -ENV HOME /home/pi
  -ENV GO /home/pi/go
  -ENV GOPATH /home/pi/go_dev
  +ENV HOME=/home/pi
  +ENV GO=/home/pi/go
  +ENV GOPATH=/home/pi/go_dev
  +ENV GOROOT=/home/pi/go
   
   # Edit PATH
  -ENV PATH /home/pi/pi-blaster:$PATH
  -ENV PATH /home/pi/go/bin:$PATH
  +ENV PATH=/home/pi/pi-blaster:$PATH
  +ENV PATH=/home/pi/go/bin:$PATH
  +
  +RUN touch /home/pi/.bashrc
  +RUN echo "export PATH=$PATH" > /home/pi/.bashrc
  +RUN echo $PATH
   
   RUN apt-get update && apt-get install -y \
           wget \
  
positive.code: CMD ["pi-blaster"]
  
  # Download go dependencies
  RUN go get -d -u github.com/hybridgroup/gobot/...
  
  # Download blink.go
  RUN wget --no-check-certificate -O $HOME/blink.go https://gist.github.com/Moddus/bb8600d28f009aeca87f
  
  CMD ["go", "run", "/home/pi/blink.go"]
  
  # cleanup a bit
  RUN apt-get clean
  
negative.code: 		libc-dev \
          gcc \
  		nfs-common \
  		ca-certificates \
          --no-install-recommends && \
          rm -rf /var/lib/apt/lists/*
  
  
  
  # RUN mkdir -p $GO
  RUN mkdir -p $GOPATH
  
  # Download golang 1.5 to /home/pi/go
  RUN wget -qO- https://dl.dropboxusercontent.com/u/15211215/go1.5_armv7.tar.gz | tar xvz -C $HOME
  
  # Download pi-blaster for gpio control
  RUN git clone https://github.com/sarfata/pi-blaster.git $HOME/pi-blaster && \
          cd $HOME/pi-blaster && \
          ./autogen.sh && \
          ./configure && \
  