doc: macos support

docs/getting-started.md

@@ -125,6 +125,9 @@ We offer a Windows 64 bit installer for the `amd64` (`x86-64`) platform only.
    simply run the included installer executable inside it. Next, follow the
    on-screen instructions of the installer.
 
+4. In Edgeshark's web UI simply click on one of the Wireshark fin buttons to
+   start a Wireshark capture session.
+
 #### **Linux 64bit**
 
 We offer distribution-specific packages in `.apk`, `.deb`, and `.rpm` formats
@@ -152,6 +155,29 @@ for both `amd64` and `arm64` architectures.
 
    ![external capture plugins](_images/wireshark-linux-extcaps-list.png
    ':class=scrshot')
+7. In Edgeshark's web UI simply click on one of the Wireshark fin buttons to
+   start a Wireshark capture session.
+
+#### **macOS 64bit**
+
+We (only) support the `arm64` architecture on macOS.
+
+1. [Download the latest plugin
+   package](https://github.com/siemens/cshargextcap/releases/latest) suitable
+   for macOS on ARM 64bit.
+
+2. extract the contained `cshargextcap` plugin binary.
+
+3. copy/move the plugin binary into
+   `/Applications/Wireshark.app/Contents/MacOS/extcap`.
+
+4. start Wireshark.
+
+5. in Wireshark's main window, click on the gear icon next to the "Docker host
+   capture" external capture interface.
+
+> [!NOTE] clicking on a wireshark fin button in the web UI probably doesn't
+> work. We welcome PRs that make this feature work on macOS!
 
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