anchor.diff:          lsb-release \
           wget \
           xdg-utils \
  -        nodejs npm \
  +        nodejs \
       && rm -rf /var/lib/apt/lists/*
   
   COPY bot.js /home/user/
  
positive.code: # limitations under the License.
  FROM gcr.io/kctf-docker/challenge@sha256:d884e54146b71baf91603d5b73e563eaffc5a42d494b1e32341a5f76363060fb
  
  RUN apt-get update && apt-get install -y gnupg2
  
  # Install latest chrome dev package and fonts to support major charsets (Chinese, Japanese, Arabic, Hebrew, Thai and a few others)
  # Note: this installs the necessary libs to make the bundled version of Chromium that Puppeteer installs, work.
  
negative.code: #  plus libxshmfence1 which seems to be missing
  RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - \
      && sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list' \
      && wget -q -O - https://deb.nodesource.com/setup_16.x | bash - \
      && apt-get update \
      && DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends \
          ca-certificates \
  