anchor.diff:  
   # Update distro and install dependencies
   # hadolint ignore=DL3008
  -RUN apt-get update && apt-get install -y --no-install-recommends \
  +RUN apt-get update && apt-get dist-upgrade && apt-get install -y --no-install-recommends \
       apt-transport-https \
       build-essential \
       ca-certificates \
  
positive.code: # required for ruby: libcurl4-openssl-dev
  # required for python: python3, pkg-config
  # hadolint ignore=DL3008
  RUN apt-get update && apt-get install -y --no-install-recommends \
      apt-transport-https \
      ca-certificates \
      curl \
  
negative.code: # required for general build: make, wget, curl, ssh
  # required for python: python3, pkg-config
  # hadolint ignore=DL3008
  RUN apt-get update && apt-get -y dist-upgrade && apt-get install -y --no-install-recommends \
      apt-transport-https \
      ca-certificates \
      curl \
  