This ensures that we get updates from additional repos like amber-security in the image out-of-box.
Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be upgraded: apt apt-utils bsdutils ca-certificates fdisk libapt-inst2.0 libapt-pkg5.0 libblkid1 libc-bin libc6 libfdisk1 libmount1 libsmartcols1 libssl1.1 libudev1 libuuid1 mount multiarch-support openssl pureos-minimal sudo systemd-sysv tzdata udev util-linux 25 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.