add monorepo guide

Author: ethanpalm

guides/monorepo.mdx

@@ -2,4 +2,39 @@
 title: "Monorepo setup"
 description: "Deploy your docs from a repo that contains multiple projects"
 icon: "folder-git"
----
+---
+
+Configure Mintlify to deploy documentation from a specific directory within a monorepo. This setup allows you to maintain documentation alongside your code in repositories that contain multiple projects or services.
+
+## Prerequisites
+
+* Admin or owner access to your Mintlify project.
+* Documentation files organized in a dedicated directory within your monorepo.
+* A valid `docs.json` in your documentation directory.
+
+## Configure monorepo deployment
+
+<Steps>
+<Step title="Access Git settings">
+Navigate to to [Git Settings](https://dashboard.mintlify.com/settings/deployment/git-settings) in your dashboard.
+
+<Frame>
+<img
+  className="block dark:hidden my-0 pointer-events-none"
+  src="/images/monorepo-light.png"
+  alt="The project settings panel in the Git Settings menu. The Set up as monorepo toggle button is enabled and a path to the /docs directory is specified."
+/>
+<img
+  className="hidden dark:block my-0 pointer-events-none"
+  src="/images/monorepo-dark.png"
+  alt="The project settings panel in the Git Settings menu. The Set up as monorepo toggle button is enabled and a path to the /docs directory is specified."
+/>
+</Frame>
+
+</Step>
+<Step title="Set your documentation path">
+1. Select the **Set up as monorepo** toggle button.
+2. Enter the relative path to your docs directory.
+3. Select **Save changes**.
+</Step>
+</Steps>