anchor.diff:  RUN set -x \
     && apt-get update \
     && apt-get install -y --no-install-recommends \
  -    ca-certificates=20190110 \
  -    nmap=7.70+dfsg1-6 \
  +    ca-certificates=20200601~deb10u1 \
  +    nmap=7.70+dfsg1-6+deb10u1 \
       net-tools=1.60+git20180626.aebd88e-1 \
       bluetooth=5.50-1.2~deb10u1 \
  -    ffmpeg=7:4.1.4-1~deb10u1 \
  +    ffmpeg=7:4.1.6-1~deb10u1 \
       iperf3=3.6-2 \
       iputils-ping=3:20180629-2+deb10u1 \
       libbluetooth3=5.50-1.2~deb10u1 \
  
positive.code:   && apt-get install -y --no-install-recommends \
      build-essential=12.6 \
      cmake=3.13.4-1 \
      libavcodec-dev=7:4.1.4-1~deb10u1 \
      libavdevice-dev=7:4.1.4-1~deb10u1 \
      libavfilter-dev=7:4.1.4-1~deb10u1 \
      libavformat-dev=7:4.1.4-1~deb10u1 \
      libavutil-dev=7:4.1.4-1~deb10u1 \
      libbluetooth-dev=5.50-1.2~deb10u1 \
      libcurl4-openssl-dev=7.64.0-4+deb10u1 \
      libglib2.0-dev=2.58.3-2+deb10u2 \
  
negative.code:     libmpc-dev=1.1.0-1 \
      libmpfr-dev=4.0.2-1 \
      libpq5=11.7-0+deb10u1 \
      libswresample-dev=7:4.1.6-1~deb10u1 \
      libswscale-dev=7:4.1.6-1~deb10u1 \
      libudev-dev=241-7~deb10u4 \
      libxrandr-dev=2:1.5.1-1 \
      swig=3.0.12-2 \
    && pip3 install \
      --no-cache-dir \
      --prefix="${PYTHONUSERBASE}" \
  