fix(manager/macos): address auto-update regression (#2404)

server_manager/README.md

@@ -36,16 +36,16 @@ This will enable the Developer menu on the application window.
 To build the app binary:
 
 ```
-npm run action server_manager/electron/build ${PLATFORM} -- --buildMode=[debug,release]
+npm run action server_manager/electron/package ${PLATFORM} -- --buildMode=[debug,release]
 ```
 
 Where `${PLATFORM}` is one of `linux`, `macos`, `windows`.
 
 The per-platform standalone apps will be at `output/build/server_manager/electron/static/dist`.
 
-- Windows: zip files. Only generated if you have [wine](https://www.winehq.org/download) installed.
-- Linux: tar.gz files.
-- macOS: dmg files if built from macOS, zip files otherwise.
+- Windows: An `.exe` file. Only generated if you have [wine](https://www.winehq.org/download) installed.
+- Linux: An `.AppImage` file.
+- macOS: A `.dmg` and a `.zip` file as [required by auto update](https://www.electron.build/mac#target).
 
 > NOTE: If you are building for macOS, you may need to run `security unlock-keychain login.keychain` so electron-builder has access to your certificates.
 

server_manager/electron/electron_builder.json

@@ -29,7 +29,7 @@
     "icon": "icons/mac/icon.icns",
     "target": [
       {
-        "target": "dmg",
+        "target": "default",
         "arch": "universal"
       }
     ],