Add apt cleanup to reduce image size

README.md

@@ -3,7 +3,6 @@ N-AnotterKiosk (Not-AnotterKiosk)
 
 ### I have hacked this about alot from the main branch, mainly Raspberry Pi changes
 
-- Removed x86 support
 - Added scheduled screen on/off
 - Added scheduled chrome page refresh
 - Rpi3 Overclock settings

build_raspberry_pi.sh

@@ -15,8 +15,8 @@ sudo mkdir -p "${BUILD_DIR}"
 # download a modern RaspiOS build
 if [ ! -f raspios.img.xz ]
 then
-	wget -O raspios.img.xz "https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2024-03-15/2024-03-15-raspios-bookworm-arm64-lite.img.xz"
+	wget -O raspios.img.xz "https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2023-05-03/2023-05-03-raspios-bullseye-arm64-lite.img.xz"
-	echo "b58a0b61612493b2b37b8415438a73496def13de56f5743e4d7334571389f3b8 raspios.img.xz" | sha256sum --check --status
+	echo "bf982e56b0374712d93e185780d121e3f5c3d5e33052a95f72f9aed468d58fa7 raspios.img.xz" | sha256sum --check --status
 	if [ $? -ne 0 ]
 	then
 	    echo "downloaded raspios does not match checksum";
@@ -59,10 +59,14 @@ sudo mount proc -t proc -o nosuid,noexec,nodev "${BUILD_DIR}/proc/"
 sudo mount sys -t sysfs -o nosuid,noexec,nodev,ro "${BUILD_DIR}/sys/"
 sudo mount devpts -t devtmpfs -o mode=0755,nosuid "${BUILD_DIR}/dev/"
 
+# Raspbian currently ships only Debian 11. Let's upgrade to 12.
+sudo chroot "${BUILD_DIR}" /raspberry_pi_bullseye.sh
+
 # and then actually install everything.
 sudo chroot "${BUILD_DIR}" /kiosk_skeleton/build.sh
 
 sudo rm -r "${BUILD_DIR}/kiosk_skeleton"
+sudo rm "${BUILD_DIR}/raspberry_pi_bullseye.sh"
 
 cp "${BUILD_DIR}/version-info" version-info
 

kiosk_skeleton/build.sh

@@ -2,6 +2,7 @@
 # This script is being run on the target debian platform
 
 apt update
+APT_LISTCHANGES_FRONTEND=none DEBIAN_FRONTEND=noninteractive apt dist-upgrade -y
 DEBIAN_FRONTEND=noninteractive apt install -y lightdm openbox nginx php-fpm php-cli chromium autossh unclutter x11-xserver-utils xdotool htop nano openssh-server rsync x11vnc lm-sensors ntpdate scrot wireless-regdb fontconfig
 
 rsync -a --chown=root:root "/kiosk_skeleton/." "/"
@@ -95,9 +96,6 @@ chown -R pi:pi /var/lib/hyperion || true
 chown -R pi:pi /etc/hyperion
 usermod -a -G video pi
 
-# clean up apt cache to reduce image size
-apt clean
-
 # generate a version info/build info file
 echo -n "Chromium version: " >> /version-info
 dpkg --list | grep "ii  chromium " >> /version-info
@@ -105,3 +103,7 @@ dpkg --list | grep "ii  chromium " >> /version-info
 echo -n "Linux kernel version: " >> /version-info
 ls /lib/modules/  | sort -r | head -n 1 >> /version-info
 echo >> /version-info
+
+# Clean up apt cache and remove unused packages
+apt-get clean
+apt-get autoremove -y

kiosk_skeleton/var/www/html/index.php

@@ -1,4 +1,5 @@
 <h1>Kioskbrowser</h1>
+<h2>Version: <?php echo exec('git describe --tags --abbrev=0'); ?></h2>
 
 CPU temperature: <br>
 <?php passthru("sudo vcgencmd measure_temp"); ?>

raspberry_pi_skeleton/raspberry_pi_bullseye.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+echo > /etc/apt/sources.list
+echo "deb http://deb.debian.org/debian bookworm main contrib non-free" >> /etc/apt/sources.list
+echo "deb http://security.debian.org/debian-security bookworm-security main contrib non-free" >> /etc/apt/sources.list
+echo "deb http://deb.debian.org/debian bookworm-updates main contrib non-free" >> /etc/apt/sources.list
+
+apt update
+APT_LISTCHANGES_FRONTEND=none DEBIAN_FRONTEND=noninteractive apt -o Dpkg::Options::="--force-confold" -f -y dist-upgrade
+
+# This step is a bit risky, as the current kernel in https://github.com/raspberrypi/rpi-firmware might
+# be less tested as the currently shipping kernel in the Raspberry Pi images.
+apt install -y rpi-update
+SKIP_CHECK_PARTITION=1 SKIP_WARNING=1 rpi-update