anchor.diff:      && 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="$(mktemp -d)" \
  -    && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
  +    && gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
       && gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
       && rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc \
       && chmod +x /usr/local/bin/gosu \
  
positive.code:     && 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="$(mktemp -d)" \
      && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys 6380DC428747F6C393FEACA59A84159D7001A4E5 \
      && gpg --batch --verify /usr/local/bin/tini.asc /usr/local/bin/tini \
      && rm -r "$GNUPGHOME" /usr/local/bin/tini.asc \
      && chmod +x /usr/local/bin/tini \
  
negative.code:       B9AE9905FFD7803F25714661B63B535A4C206CA9 \
        C4F0DFFF4E8C1A8236409D08E73BC641CC11F4C8 \
      ; do \
        gpg --batch --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" \
      && gpg --batch --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 \
      && rm -r "$GNUPGHOME" "node-v$NODE_VERSION-linux-x64.tar.gz" SHASUMS256.txt.asc \
  