Debian 12 Configuration Files

[Unit]
Description=Daily apt download activities

[Timer]
OnCalendar=*-*-* 6,18:00
RandomizedDelaySec=12h
Persistent=true

[Install]
WantedBy=timers.target

[Unit]
Description=Daily apt download activities
Documentation=man:apt(8)
ConditionACPower=true
After=network.target network-online.target systemd-networkd.service NetworkManager.service connman.serv…

[Unit]
Description=Daily apt upgrade and clean activities
After=apt-daily.timer

[Timer]
OnCalendar=*-*-* 6:00
RandomizedDelaySec=60m
Persistent=true

[Install]
WantedBy=timers.target

[Unit]
Description=Daily apt upgrade and clean activities
Documentation=man:apt(8)
ConditionACPower=true
After=apt-daily.service network.target network-online.target systemd-networkd.service NetworkM…

deb http://deb.debian.org/debian bookworm main
deb http://deb.debian.org/debian bookworm-updates main
deb http://deb.debian.org/debian-security bookworm-security main
deb http://repo.mysql.com/apt/de…

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# In Docker, we don't often need the "Translations" files, so we're just wasting
# time and space by downloading them, and this inhibits that.  For users that do
# need them, it's a simple matter to …

# Since Docker users using "RUN apt-get update && apt-get install -y ..." in
# their Dockerfiles don't go delete the lists files afterwards, we want them to
# be as small as possible on-disk, so we e…

# Since for most Docker users, package installs happen in "docker build" steps,
# they essentially become individual layers due to the way Docker handles
# layering, especially using CoW filesystems.…

# Since Docker users are looking for the smallest possible final images, the
# following emerges as a very common pattern:

#   RUN apt-get update \
#       && apt-get install -y <packages> \
#      …

// Pre-configure all packages with debconf before they are installed.
// If you don't like it, comment it out.
DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt || true";};

APT
{
  NeverAutoRemove
  {
	"^firmware-linux.*";
	"^linux-firmware$";
	"^linux-image-[a-z0-9]*$";
	"^linux-image-[a-z0-9]*-[a-z0-9]*$";
  };

  VersionedKernelPackages
  {
	# kernels
	"linux-.*";
	"…