anchor.diff:  
   COPY --from=builder /usr/bin/pond-client /usr/bin/pond-client
   COPY --from=builder /usr/bin/pond-server /usr/bin/pond-server
  +
   CMD [ "pond-client", "-cli" ]
  
positive.code: 	libtspi1 \
  	--no-install-recommends \
  	&& rm -rf /var/lib/apt/lists/*
  
  RUN buildDeps=' \
  		golang \
  		git \
  		gcc \
  		libgtk-3-dev \
  		libgtkspell3-3-dev \
  		libtspi-dev \
  		pkg-config \
  	' \
  	set -x \
  	&& apt-get update \
  	&& apt-get install -y $buildDeps --no-install-recommends \
  	&& go get -d -v github.com/agl/pond/client \
  	&& go get -d -v github.com/agl/pond/server \
  	&& cd /go/src/github.com/agl/pond \
  	&& go build -o /usr/bin/pond-client ./client \
  	&& go build -o /usr/bin/pond-server ./server \
  	&& apt-get purge -y --auto-remove $buildDeps \
  	&& rm -rf /var/lib/apt/lists/* \
  	&& rm -rf /go \
  	&& echo "Build complete."
  
  # create pond user
  ENV HOME /home/pond
  
negative.code: FROM golang:latest as builder
  LABEL maintainer "Jessie Frazelle <jess@linux.com>"
  
  ENV PATH /go/bin:/usr/local/go/bin:$PATH
  ENV GOPATH /go
  
  RUN	apt-get update && apt-get install -y \
  	libgtk-3-dev \
  	libgtkspell3-3-dev \
  	libtspi-dev \
  	pkg-config \
  	--no-install-recommends \
  	&& rm -rf /var/lib/apt/lists/*
  
  RUN go get -d -v github.com/agl/pond/client \
  	&& go get -d -v github.com/agl/pond/server
  
  WORKDIR /go/src/github.com/agl/pond
  
  RUN go build -o /usr/bin/pond-client ./client \
  	&& go build -o /usr/bin/pond-server ./server
  
  FROM debian:buster-slim
  
  RUN	apt-get update && apt-get install -y \
  	ca-certificates \
  