anchor.diff:  COPY stack.yaml /mnt
   COPY *.cabal /mnt
   WORKDIR /mnt
  -RUN rm -rf ~/.stack &&  \
  +RUN sed -i 's/lts-16.25/lts-16.4/' stack.yaml && \
  +    rm -rf ~/.stack &&  \
       stack config set system-ghc --global true && \
       stack setup && \
       stack install --split-objs --ghc-options="-fPIC" --only-dependencies
  
positive.code: FROM ghcr.io/erebe/wstunnel:build-cache as builder
  COPY . /mnt
  
  RUN echo '  ld-options: -static' >> wstunnel.cabal ; \
      stack install --split-objs --ghc-options="-fPIC"
  #RUN upx /root/.local/bin/wstunnel
  
negative.code: 
  # Final Image
  FROM alpine:latest as runner
  
  LABEL org.opencontainers.image.source https://github.com/erebe/server
  
  