In general, the build process consists of several nested for-loops. But even without bash scripting skills, you will be able to create your own image with Cockpit preinstalled. If not, reading the build.sh and trying to understand what is going on is a really good practice. If you already know how to read and write bash scripts, it won't be a hurdle to understand the process defined there. The build process is controlled by the build.sh, which can be found in the root repository. To build a Raspberry Pi OS with a desktop, you have to build stages 0, 1, 2, 3, 4, and 5. For example, to build a Raspberry Pi OS Lite, you have to build stages 0, 1, and 2. You can't leave out a stage in the middle either. The stages build upon each other: It is not possible to build a higher stage without building the lower stages. ![]() Stage 5: Corresponds to Raspberry Pi OS Full.Stage 4: Corresponds to an ordinary Raspberry Pi OS.Stage 3: Desktop system-Installs X11, LXDE, web browsers, and so on.Stage 2: Lite system-Corresponds to Raspberry Pi OS Lite.Stage 1: Minimal system-Creates an absolute minimal system.Stage 0: Bootstrap-Creates a usable filesystem.Each stage is represented as an ordinary folder and represents a logical intermediate with regards to a full Raspberry Pi OS image. The overall build process is separated into stages. In order to follow the instructions in this article, make a clone of the pi-gen repository or fork it if you want to start developing you own image. I set up my virtual machine with a 40GB hard drive which seemed to be enough. Also consider that you need internet access in the virtual machine and enough free disk space. ![]() When you have everything up and running, also install the dependencies mentioned in the repository description. ![]() ![]() If you are not familiar with virtual machines, take a look at my article Try Linux on any operating system with VirtualBox. It may work on other systems as well but to avoid unnecessary complications, I recommend to setup a virtual machine with one of the recommended systems. To successfully run the build process, it is recommended to use a 32bit version of Debian Buster or Ubuntu Xenial. Whitepaper: Data-intensive intelligent applications in a hybrid cloud blueprint.eBook: Running Kubernetes on your Raspberry Pi.Getting started with Raspberry Pi cheat sheet.
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