add proxy docs

Author: adtac

macos.mdx

@@ -0,0 +1,44 @@
+---
+title: "macOS support"
+sidebarTitle: "macOS"
+description: "Use Subtrace in your macOS development environment"
+icon: "apple"
+---
+
+Subtrace has experimental support for developers on macOS.
+
+<Steps>
+  <Step title="Start your backend service">
+    Start your backend service the way you normally do. We'll assume it's
+    running on port 8000 in this guide.
+  </Step>
+
+  <Step title="Download Subtrace">
+    Open a terminal and download the latest version of Subtrace:
+
+    ```bash
+    curl -fSLO "https://subtrace.dev/download/$(uname -s)/$(uname -m)/subtrace" && chmod +x ./subtrace
+    ```
+  </Step>
+
+  <Step title="Run the proxy">
+    Run the Subtrace proxy on port 9000. All requests sent to port 9000 will be
+    forwarded to 8000:
+
+
+    ```bash
+    ./subtrace proxy 9000:8000
+    ```
+
+    <Expandable title="example output">
+      <img className="rounded-xl" src="/quickstart-link.png" />
+    </Expandable>
+  </Step>
+
+  <Step title="Watch">
+    Open the `subt.link` URL in your browser to watch a live stream of every
+    requests that gets sent to port 9000!
+
+    <img className="rounded-xl" src="/quickstart-screenshot.png" />
+  </Step>
+</Steps>