add back

lsp/README.md

@@ -2,6 +2,39 @@
 As mentioned in the release notes, the `.vsix` file described here provides early access to features that
 we are proposing to be contributed into the official Docker vscode extension.
 
+## Installing
+
+### Step 1: Download Extension File
+Two VSCode extensions are available:
+- Dockerfile Language Features: https://github.com/docker/docker-vscode/releases/tag/lsp-v1.29.6-alpha
+- Generate runnable makefile in markdown: https://github.com/docker/docker-vscode/releases/tag/runbook-v0.0.3
+
+Download the `.vsix` bundle.
+
+### Step 2: Enable Extension in VSCode
+
+#### CLI:
+
+Must have VSCode [code](https://code.visualstudio.com/docs/editor/command-line#_code-is-not-recognized-as-an-internal-or-external-command) command in PATH:
+
+```bash
+code --install-extension /my/path/to/docker-bundle.vsix --force
+```
+
+#### GUI:
+
+Extensions -> `...` menu -> `Install from VSIX`
+
+<img width="570" alt="Screenshot of docker install menu" src="https://github.com/docker/docker-ai/assets/5000430/1cf2b904-f341-4a84-aceb-1933c51efe68">
+
+#### GUI (command palette):
+
+1. Type `>` into top search bar
+**Shortcut: Press ⇧⌘P (OSX) or CTRL⇧P (Win/Linux)**
+2. Select `Extensions: Install from VSIX...`
+3. Select `.vsix` file downloaded
+4. Hit the “Reload Now” button in the notification at the bottom right corner
+
 ## Dependencies
 These updates require a local [Docker Desktop](https://www.docker.com/products/docker-desktop/) and a running
 docker engine.