anchor.diff:    && mkdir -p bin etc include lib opt sbin share var/homebrew/linked Cellar \
     && ln -s ../Homebrew/bin/brew /home/linuxbrew/.linuxbrew/bin/ \
     && HOMEBREW_NO_ANALYTICS=1 HOMEBREW_NO_AUTO_UPDATE=1 brew tap homebrew/core \
  +  && HOMEBREW_NO_ANALYTICS=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install ca-certificates \
     && brew cleanup \
     && { git -C /home/linuxbrew/.linuxbrew/Homebrew config --unset gc.auto; true; } \
     && { git -C /home/linuxbrew/.linuxbrew/Homebrew config --unset homebrew.devcmdrun; true; } \
  
positive.code: ENV HOMEBREW_ON_DEBIAN7=1
  ENV HOMEBREW_CURL_PATH=/usr/bin/curl
  ENV HOMEBREW_GIT_PATH=/usr/bin/git
  
  # hadolint ignore=DL3008
  RUN apt-get update \
  
negative.code: 
  SHELL ["/bin/bash", "-o", "pipefail", "-c"]
  # hadolint ignore=DL3003
  RUN curl -sL http://ftp.gnu.org/gnu/tar/tar-1.32.tar.gz | tar xz \
      && cd /tar-1.32 \
      && FORCE_UNSAFE_CONFIGURE=1 ./configure --prefix=/usr/local \
      && make install \
  