anchor.diff:  RUN groupadd -r sentry && useradd -r -m -g sentry sentry
   
   RUN apt-get update && apt-get install -y --no-install-recommends \
  -        curl \
           gcc \
           git \
           libffi-dev \
  
positive.code: 
  RUN [ "$SENTRY_BUILD" != '' ] \
      && mkdir -p /usr/local/node && PATH=/usr/local/node/bin:$PATH \
      && apt-get update && apt-get install -y --no-install-recommends make g++ \
      && rm -rf /var/lib/apt/lists/* \
      && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.gz" \
      && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
      && gpg --verify SHASUMS256.txt.asc \
      && grep " node-v$NODE_VERSION-linux-x64.tar.gz\$" SHASUMS256.txt.asc | sha256sum -c - \
      && tar -xzf "node-v$NODE_VERSION-linux-x64.tar.gz" -C /usr/local/node --strip-components=1 \
  
negative.code: # grab gosu for easy step-down from root
  ENV GOSU_VERSION 1.7
  RUN set -x \
      && apt-get update && apt-get install -y --no-install-recommends wget && rm -rf /var/lib/apt/lists/* \
      && wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
      && wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
      && export GNUPGHOME="$(mktemp -d)" \
      && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
      && gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
      && rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc \
      && chmod +x /usr/local/bin/gosu \
      && gosu nobody true \
      && apt-get purge -y --auto-remove wget
  
  # grab tini for signal processing and zombie killing
  ENV TINI_VERSION v0.9.0
  RUN set -x \
      && apt-get update && apt-get install -y --no-install-recommends wget && rm -rf /var/lib/apt/lists/* \
      && wget -O /usr/local/bin/tini "https://github.com/krallin/tini/releases/download/$TINI_VERSION/tini" \
      && wget -O /usr/local/bin/tini.asc "https://github.com/krallin/tini/releases/download/$TINI_VERSION/tini.asc" \
      && export GNUPGHOME="$(mktemp -d)" \
      && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys 6380DC428747F6C393FEACA59A84159D7001A4E5 \
      && gpg --batch --verify /usr/local/bin/tini.asc /usr/local/bin/tini \
      && rm -r "$GNUPGHOME" /usr/local/bin/tini.asc \
      && chmod +x /usr/local/bin/tini \
      && tini -h \
      && apt-get purge -y --auto-remove wget
  
  # Support for RabbitMQ
  RUN pip install librabbitmq==1.6.1
  