Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time


A Raspberry Pi and other ARM devices distribution builder. CustomPiOS opens an already existing image, modifies it and repackages the image ready to ship.

This repository contains the source script to generate a distribution out of an existing Raspbian distro image, or Armbian devices.


CustomPiOS is 100% free and open source and maintained by Guy Sheffer. If its helping your life, your organisation or makes you happy, please consider making a donation. It means I can code more and worry less about my balance. Any amount counts. Also many thanks to people contributing code.


Where to get it?

Clone this repo. Then follow instructions either to build an existing distro or create your own.

How to use it?

  1. Clone this image git clone
  2. Run ./src/make_custom_pi_os -g <distro folder> in the repo, distro folder should not exist and contain no spaces. This will both create a folder to build a new distro from, and also download the latest raspbian lite image. The initial distro has a module that has the name of your distro, and you can find it under <distro folder>/src/modules/<distro name> (there should be only one module in the modules folder).
  3. cd to <distro folder>/src
  4. Edit your <distro folder>/src/config, you can also edit the starting module, which is named as your distro at modules/<dstro name>. More on that in the Developing section.
  5. Run sudo ./<distro folder>/src/build_dist to build an image. If this fails use the method described in the vagrant build section (which makes sure sfdisk and other things work right).


  • Modules - write one module and use it for multiple distros
  • Write only the code you need for your distro - no need to maintain complicated stuff like building kernels unless its actually want to do it
  • Standard modules give extra functionality out of the box
  • Supports over 40 embedded devices using Armbian and Raspbian.
  • Supports Raspberry Pi OS arm64 bit using the raspios_lite_arm64 variant.



  1. qemu-arm-static or gentoo qemu with static USE
  2. Downloaded Raspbian image.
  3. root privileges for chroot
  4. Bash
  5. jq
  6. git
  7. realpath
  8. sudo (the script itself calls it, running as root without sudo won't work)
  9. p7zip-full
  10. Python 3.2+

Known to work building configurations

  1. Using the CustomPiOS docker image
  2. Linux (Ubuntu / Debian / Gentoo etc)
  3. OS X - See this thread for information


See Modules entry in wiki


This is where the stuff you want to execute inside the distro is written.

In start_chroot_script write the main code, you can use end_chroot_script to write cleanup functions, that are run at the end of the module namespace.

Useful commands from

CustomPiOS comes with a script that has useful functions you can use inside your chroot_script. To use it you can add to your script source /

unpack [from_filesystem] [destination] [owner] - Lets you unpack files from the filesystem folder to a given destination. [owner] lets you set which user is going to be the owner. e.g. unpack /filesystem/home/pi /home/pi pi

gitclone <MODULE_NAME>_<REPO_NAME>_REPO destination - Lets you clone a git repo, and have the settings preset in the config file. Example usage in OCTOPI module.

In chroot_script:


In config:


Export files from image

CustomPiOS has a feature to export files created in the chroot to archives you can ship as a tar.gz archive.

To export run inside of a chroot_script: custompios_export [name of archive] [file path in chroot]

You can also use: copy_and_export [name of archive] [source] [destination]

and: copy_and_export_folder [name of archive] [folder] [destination]

The results would be saved in the workspace folder.


Lets you add files to your distro, and save them to the repo. The files can be unpacked using the unpack command that is in


This is where you can create module-specific settings. They can then be overwritten in a distro or variant. The naming convention is the module name in

Build a Distro From within Raspbian / Debian / Ubuntu / CustomPiOS Distros

See building entry in wiki

Building Distro Variants

See building entry in wiki

Building Using Docker

See Building with docker entry in wiki

Building Using Vagrant

See Building with Vagrant entry in wiki

Build using CI/CD

You can build CustomPiOS images from a continuous integration system in the cloud. For an example on how to do this on github take a look at this github actions yaml


  1. If needed, override existing config settings by creating a new file src/config.local. You can override all settings found in src/config. If you need to override the path to the Raspbian image to use for building your distro, override the path to be used in BASE_ZIP_IMG, which is part of the base module. By default the most recent file matching * found in src/image will be used.
  2. Run src/build as root.
  3. The final image will be created at the src/workspace

List of Distributions using CustomPiOS

  • OctoPi - The ready-to-go Raspberry Pi image with OctoPrint
  • FarmPi - An Ubuntu ARM 64bit Raspbery Pi image running OctoFarm
  • FullPageOS - A Raspberry Pi distro to display a full page browser on boot
  • Zynthian - Open Synth Platform
  • ElectricSheepPi - A Raspberry Pi distribution to run Electric Sheep digital art
  • AlarmPi - A Raspberry Pi distribution that turns a Raspberry Pi to an IOT telegram-controlled alarm clock
  • RealtimePi - An out-of-the-box Raspebrry Pi/Raspbian distro with a realtime kernel
  • RMS Pi - Raspberry Pi Distro for Winlink RMS
  • V1PI - Use your Raspberry Pi to control your V1Engineering machine
  • HotSpotOS - Makes a Raspberry Pi start a hotspot, if no wifi was found to connect to
  • MtigOS - Distro that lets you receive, store and graph sensor information from ESP8266 chips. It uses and MTIG stack: Mosquitto, Telegraf, InfluxDB and Grafana which are all pre-configured to work together. They automatically update using Docker.
  • Tilti-Pi - Distro that lets you submit BLE data for the tilt hydrometer via the tilty package and a built in dashboard
  • MainsailOS - Distro that packages the Mainsail web UI, the Moonraker API, and the Klipper 3D printer firmware in an easy to package.
  • UbuntuDockerPi - Distro ships with Ubuntu ARM 64bit Docker and docker-compose ready to build stuff for arm64v8/aarch64 or host whatever you like.
  • FluiddPi - Distro that packages Fluidd, Moonraker, and Klipper into the ultimate 3D printer firmware package.
  • My Naturewatch Camera - A Python / OpenCV camera server to stream Pi camera content to a remote client through a website.
  • PiFireOS - Distro for pellet grill/smoker control, running PiFire.

Code contribution would be appreciated!