anchor.diff:  
   ENV RC_VERSION 1.1.3
   
  +COPY patches /home/rocketchat/patches
  +
   RUN apt-get update \
    && apt-get install -y \
       build-essential \
       curl \
       gnupg \
  +    patch \
       python \
    && useradd -m rocketchat \
    # Install Rocket.Chat
  
positive.code:     build-essential \
      curl \
      gnupg \
      python \
   && apt-get autoremove -y \
   && apt-get clean \
  
negative.code:  && gpg --batch --verify rocket.chat.tgz.asc rocket.chat.tgz \
   && tar zxvf rocket.chat.tgz \
   && rm rocket.chat.tgz rocket.chat.tgz.asc \
   && cd $BUNDLE_DIR \
   # Patches apply
   && for path in $(ls ../patches/) \
   ; do patch -p1 < "../patches/${path}" \
   ; done \
   && cd programs/server \
   && npm install \
   && curl -O https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh \
   && chmod +x wait-for-it.sh \
  