anchor.diff:        gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
       done \
       && apt-get update && apt-get install -y --no-install-recommends wget && rm -rf /var/lib/apt/lists/* \
  -    && wget "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.gz" \
  -    && wget "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
  +    && wget --no-verbose "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.gz" \
  +    && wget --no-verbose "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 --strip-components=1 \
  
positive.code: RUN set -x \
      && export TINI_VERSION=0.15.0 \
      && 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/v$TINI_VERSION/tini" \
      && wget -O /usr/local/bin/tini.asc "https://github.com/krallin/tini/releases/download/v$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 \
  
negative.code: RUN set -x \
      && export GOSU_VERSION=1.10 \
      && apt-get update && apt-get install -y --no-install-recommends wget && rm -rf /var/lib/apt/lists/* \
      && wget --no-verbose -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
      && wget --no-verbose -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 \
  