* replace apt with apt-get
APT is not meant to be used in scripts: https://manpages.debian.org/stretch/apt/apt.8.en.html#SCRIPT_USAGE_AND_DIFFERENCES_FROM_OTHER_APT_TOOLS
* use ARG for DEBIAN_FRONTEND=noninteractive
and get rid of the other instances. Since it's an ARG, it will only be valid during the container build process
* better line breaks for easy of maintanace
* alphabetical order of packages
* reduce image size by cleaning APT cache
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