docs: add developer/install-and-prerequisites

docs/docs/developer/01-overview/04-install-and-prerequisites.md

@@ -0,0 +1,65 @@
+---
+title: Installation and Prerequisites
+slug: /developer/install-and-prerequisites
+description: Jan is a ChatGPT-alternative that runs on your own computer, with a local API server.
+keywords:
+  [
+    Jan AI,
+    Jan,
+    ChatGPT alternative,
+    local AI,
+    private AI,
+    conversational AI,
+    no-subscription fee,
+    large language model,
+    installation,
+    prerequisites,
+    developer setup,
+  ]
+---
+
+## Requirements:
+
+- [Hardware Requirements](../../guides/02-installation/06-hardware.md)
+
+- System Requirements:
+  - [Windows](../../install/windows/#system-requirements)
+  - [MacOS](../../install/mac/#system-requirements)
+  - [Linux](../../install/linux/#system-requirements)
+
+## Prerequisites
+
+Before installing Jan, make sure you have the following installed on your computer:
+
+- [Node.js](https://nodejs.org/en/) (version 20.0.0 or higher)
+- [yarn](https://yarnpkg.com/) (version 1.22.0 or higher)
+- [make](https://www.gnu.org/software/make/) (version 3.81 or higher)
+
+## Instructions
+
+1. Clone the repository and install dependencies
+
+```bash
+git clone https://github.com/janhq/jan
+cd jan
+git checkout -b DESIRED_BRANCH
+yarn install
+```
+
+2. Run development and use Jan Desktop
+
+```bash
+make dev
+```
+
+This will start the development server and open the Jan Desktop app.
+
+## For Production Build
+
+```bash
+# Do steps 1 and 2 in the previous section
+# Build the app
+make build
+```
+
+This will build the app MacOS (M1/M2/M3) for production (with code signing already done) and put the result in dist folder.