anchor.diff:  
   # install Go
   RUN curl -fsSLO "https://storage.googleapis.com/golang/go1.5.1.linux-amd64.tar.gz" \
  -	&& tar -C /usr/local -xzf golang1.5.1.linux-amd64.tar.gz \
  -	&& rm -f golang1.5.1.linux-amd64.tar.gz
  +	&& tar -C /usr/local -xzf go1.5.1.linux-amd64.tar.gz \
  +	&& rm -f go1.5.1.linux-amd64.tar.gz
   
   ENV GOPATH /go
   ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH
  
positive.code: MAINTAINER "Ryan Armstrong" <ryan@cavaliercoder.com>
  
  # install updates and packages
  RUN yum update -y && yum install -y --nogpgcheck \
  	autoconf \
  	automake \
  	curl \
  
negative.code: RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 777 "$GOPATH"
  	
  # clear caches
  RUN yum clean all
  
  CMD /bin/bash
  