Add the os repository documentation

pages/dev/ISO_Builder.mdx

@@ -0,0 +1,73 @@
+---
+title: Image Builder 
+description: How Rhino Linux builds its images
+---
+
+## Building Workflow
+
+Inside the `rhino-linux/os` repository is where the production-ready images are made. While it is possible for manual building of each different architecture (e.g. `arm64`) and type (e.g. `pinetab`), 
+this is time consuming, so the team can schedule a GitHub Workflow that builds all images in a efficiently and repeatable manner.
+Images are built from scratch thanks to the Debian's [`live-build`](https://salsa.debian.org/live-team/live-build) tool in a automated fashion thanks to shell scripts.
+
+## How to get started building Rhino Linux images
+
+> [!IMPORTANT]  
+> This can only be done with the latest release of Ubuntu and derivatives such as Rhino Linux
+
+
+First, make sure the proper dependencies are installed:
+```sudo apt-get update && sudo apt-get install --reinstall debootstrap mtools dosfstools qemu-user-static binfmt-support dpkg-dev git
+```
+
+The repository can be cloned into by Git:
+```git clone https://github.com/rhino-linux/os.git && cd ./os
+```
+
+Next to install the live build dependency:
+```sudo dpkg -i debs/live-build_*_all.deb
+```
+
+Unfortunately, live-build has to be patched to support Ubuntu `devel` archives so multiple commands have to be run:
+
+```sudo mv /usr/share/debootstrap/functions functions && sudo patch -i 0002-remove-WRONGSUITE-error.patch && sudo mv functions /usr/share/debootstrap/functions && sudo cp binary_grub-efi /usr/lib/live/build/binary_grub-efi
+```
+
+The last step to get the repository running is making the scripts executable:
+```chmod -R +x build.sh etc/auto/config etc/terraform.conf etc/
+```
+
+Finally, images can be made:
+```sudo ./build.sh etc/terraform.conf
+```
+
+The resulting binary is found under `builds/[architecture]` where `[architecture]` is most commonly `amd64`
+
+## [Repository Structure](https://github.com/rhino-linux/os)
+
+```.
+├── 0002-remove-WRONGSUITE-error.patch -> for devel apt archives
+├── binary_grub-efi -> Modified grub script for RL
+├── build.sh -> Main build script
+├── debs
+│   └── live-build_20220505_all.deb -> Modified for RL
+├── etc
+│   ├── auto
+│   │   └── config -> Is used to setup live-build
+│   ├── config
+│   │   ├── bootloaders -> Stores Bootloader configurations
+│   │   │   ├── grub-pc -> Is used in UEFI boot
+│   │   │   └── isolinux -> Is used in BIOS instead of Grub
+│   │   ├── hooks
+│   │   │   └── live -> Each step (script) that live-build runs incrementally from 000 to 999
+│   │   ├── includes.binary -> Media information
+│   │   ├── includes.chroot -> Files that are directly included in media
+│   │   └── package-lists.calamares -> Calamares installer packages
+│   │       ├── desktop.list.chroot_install -> Apt packages to install onto disk
+│   │       ├── desktop.list.chroot_live -> Packages only necessary while booting off a disk image (live boot)
+│   │       └── pool.list.binary -> Packages on media (mostly firmware)
+│   └── terraform.conf -> RL specific distribution information (shouldn't needed to be changed)
+├── LICENSE
+├── README.md
+├── rebuild-list -> Don't worry about this file
+└── ub2r.sh -> Script that converts Ubuntu into Rhino Linux
+```

pages/dev/_meta.json

@@ -4,5 +4,6 @@
   "pacstall-101": "Pacscript 101",
   "hotfix-101": "Creating Hotfixes",
   "ubxi": "UBXI",
+  "ISO_Builder": "Image Builder",
   "wiki": "Wiki Page Tips"
 }