Update raspberry pi build instructions

Add linux .bash_profile and openbox autostart config for Pi OS Lite

raspberrypi/build_rpi/.bash_profile

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+[[ -z $DISPLAY && $XDG_VTNR -eq 1 ]] && startx --

raspberrypi/build_rpi/Readme.md

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+# Raspberry Pi OS Setup Instructions
+1. Use the raspberry pi imager to write Raspberry Pi OS Lite (64-bit) onto an sd card
+2. Boot the Raspberry Pi OS and setup the locale, keyboard layout and initial username and password. Enable **Auto-Login** in **System Options**
+**NOTE:** The following steps require that the Raspberry Pi have an active internet connection. Wifi can be configured by running `sudo raspi-config` and setting up the **Wireless LAN** in **System Options**.
+3. run install.sh
+  a. verify that docker is installed. Run `docker --version`
+4. save the autostart file in /etc/xdg/openbox/
+5. copy the .bash_profile file into the initial user's home directory (~/.bash_profile)
+6. copy the ./Aliro/raspberrypi/intropage directory into the user's home directory (~/intropage)
+7. copy the extracted contents of the Aliro-*.zip file from the GitHub release page into the user's home page. (~/target)
+8. change directory into ~/target/production/Aliro-*/ and run `docker compose pull`
+  **NOTE:** The docker images will only be **pulled**. The containers will not be built inside the Pi (to keep the final custom OS as light as possible)
+9. run clean.sh
+
+# Building the aliro-image executable
+## Windows
+
+## Linux

raspberrypi/build_rpi/autostart

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+# Place this file in /etc/xdg/openbox/
+# Disable any form of screen saver / screen blanking / power management
+xset s off
+xset s noblank
+xset -dpms
+
+# Allow quitting the X server with CTRL-ATL-Backspace
+setxkbmap -option terminate:ctrl_alt_bksp
+
+# Start Chromium in kiosk mode
+sed -i 's/"exited_cleanly":false/"exited_cleanly":true/' ~/.config/chromium/'Local State'
+sed -i 's/"exited_cleanly":false/"exited_cleanly":true/; s/"exit_type":"[^"]\+"/"exit_type":"Normal"/' ~/.config/chromium/Default/Preferences
+chromium-browser --disable-infobars --kiosk 'file:///intropage/index.html'

raspberrypi/build_rpi/clean.sh

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+#/bin/bash
+# disable and remove bluetooth
+# not needed in kiosk mode
+sudo systemctl disable hciuart.service
+sudo systemctl disable bluealsa.service
+sudo systemctl disable bluetooth.service
+sudo apt purge bluez -y
+# remove unnecessary packages and clean up apt
+sudo apt autoremove -y
+sudo apt autoclean -y
+sudo apt clean -y
+# clear bash history
+history -c
+

raspberrypi/build_rpi/install.sh

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+#/bin/bash
+# update and upgrade to latest packages
+sudo apt update
+sudo apt upgrade
+# install xserver, xinit, openbox, chromium-browser, pcmanfm, docker
+sudo apt install --no-install-recommends xserver-xorg x11-xserver-utils xinit openbox
+sudo apt install --no-install-recommends chromium-browser
+sudo apt install pcmanfm
+# use the convenience script to install docker
+curl -fsSL https://get.docker.com -o get-docker.sh
+sudo sh ./get-docker.sh
+# post install docker
+sudo groupadd docker
+sudo usermod -aG docker $USER
+newgrp docker