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airgap/scripts/update-packages

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#!/bin/bash
[ -f /.dockerenv ] || { echo "please run in supplied container"; exit 1; }
set -e
apt update -y
apt upgrade -y
dpkg -l | awk '{ if ($1 == "ii") print $2 "=" $3 }' > /etc/apt/packages.list
snapshot_date=$(date -d @${GIT_EPOCH} +"%Y%m%dT000000Z")
cat <<-EOF > /etc/apt/sources.list
deb http://snapshot.debian.org/archive/debian/${snapshot_date} buster main
deb http://snapshot.debian.org/archive/debian-security/${snapshot_date} buster/updates main
deb http://snapshot.debian.org/archive/debian/${snapshot_date} buster-updates main
EOF