Replace old docs with new docs repo (#24201)

docs/guides/install/workspaces.mdx

@@ -0,0 +1,70 @@
+---
+title: Configuring a monorepo using workspaces
+sidebarTitle: Workspaces with Bun
+mode: center
+---
+
+Bun's package manager supports npm `"workspaces"`. This allows you to split a codebase into multiple distinct "packages" that live in the same repository, can depend on each other, and (when possible) share a `node_modules` directory.
+
+Clone [this sample project](https://github.com/colinhacks/bun-workspaces) to experiment with workspaces.
+
+---
+
+The root `package.json` should not contain any `"dependencies"`, `"devDependencies"`, etc. Each individual package should be self-contained and declare its own dependencies. Similarly, it's conventional to declare `"private": true` to avoid accidentally publishing the root package to `npm`.
+
+```json package.json icon="file-json"
+{
+  "name": "my-monorepo",
+  "private": true,
+  "workspaces": ["packages/*"]
+}
+```
+
+---
+
+It's common to place all packages in a `packages` directory. The `"workspaces"` field in package.json supports glob patterns, so you can use `packages/*` to indicate that each subdirectory of `packages` should be considered separate _package_ (also known as a workspace).
+
+```txt File Tree icon="folder-tree"
+.
+├── package.json
+├── node_modules
+└── packages
+    ├── stuff-a
+    │   └── package.json
+    └── stuff-b
+        └── package.json
+```
+
+---
+
+To add dependencies between workspaces, use the `"workspace:*"` syntax. Here we're adding `stuff-a` as a dependency of `stuff-b`.
+
+```json packages/stuff-b/package.json icon="file-json"
+{
+  "name": "stuff-b",
+  "dependencies": {
+    "stuff-a": "workspace:*" // [!code ++]
+  }
+}
+```
+
+---
+
+Once added, run `bun install` from the project root to install dependencies for all workspaces.
+
+```sh terminal icon="terminal"
+bun install
+```
+
+---
+
+To add npm dependencies to a particular workspace, just `cd` to the appropriate directory and run `bun add` commands as you would normally. Bun will detect that you are in a workspace and hoist the dependency as needed.
+
+```sh terminal icon="terminal"
+cd packages/stuff-a
+bun add zod
+```
+
+---
+
+See [Docs > Package manager](https://bun.com/docs/cli/install) for complete documentation of Bun's package manager.