I'm playing around with different Raspberry Pi images to use as a base for a kiosk project I'm working on. So far I have created a prototype that works fine and now I'm working on creating a custom image for further development of the project. This is the first post with notes on that endeavour.
The goal is to create a small image with up to date software that is suitable to use as a platform for kiosk projects.
Download, extract and write minibian to an SD card. (I'm using this to get a minimal image as a starting point. I could as well make use of the official Rasbian image if I didn't need to keep the size down.)
Boot and login with default
root and password
Manually resize the SD card. There's no swap partition so just delete partition 2 and re-create it to fill the SD card, reboot and resize according to the guide.
Update base system
Tell APT to keep installs at a minimum by writing the following to /etc/apt/apt.conf:
APT::Install-Recommends "0"; APT::Install-Suggests "0";
Update /etc/apt/sources.list with additional keywords. Should now look like:
deb http://mirrordirector.raspbian.org/raspbian wheezy main contrib non-free rpi deb http://archive.raspberrypi.org/debian wheezy main
Update package collection and update system:
apt-get update apt-get dist-upgrade -y
Upgrade to Jessie
jessie. Replace wheezy with jessie in /etc/apt/sources.list so it looks like:
deb http://mirrordirector.raspbian.org/raspbian jessie main contrib non-free rpi deb http://archive.raspberrypi.org/debian jessie main
Then run the upgrade:
apt-get update apt-get dist-upgrade apt-get autoremove apt-get clean
Install the Raspberry Pi firmware updater and run it:
apt-get install rpi-update rpi-update
Reboot to activate the new firmware.
Setup default user
apt-get install sudo
Create default user:
useradd --create-home --shell /bin/bash --groups sudo kiosk passwd kiosk
Disable root login with SSH by changing PermitRootLogin to no in /etc/ssh/sshd_config:
... PermitRootLogin no ...
Make sure we can login with the kiosk user over SSH.