create dmg instead of zip

.github/workflows/develop.yml

@@ -69,12 +69,10 @@ jobs:
     - name: Build
       run: |
         make build-macos
-        cd dist
-        zip -r Gotify-Tray.zip Gotify-Tray.app
-        cd ..
-        cp dist/Gotify-Tray.zip Gotify-Tray.zip
+        brew install create-dmg
+        create-dmg --volname "Gotify Tray" --app-drop-link 0 0 --no-internet-enable "Gotify-Tray.dmg" "./dist/Gotify-Tray.app"
     - name: Upload artifact
       uses: actions/upload-artifact@v2
       with:
-        name: Gotify-Tray.zip
-        path: Gotify-Tray.zip
+        name: Gotify-Tray.dmg
+        path: Gotify-Tray.dmg

README.md

@@ -66,6 +66,13 @@ $ pyinstaller gotify-tray.spec
 ```
 An executable is created at `dist/gotify-tray/`.
 
+### Create a macos .app
+
+```
+$ pip install pyinstaller Pillow
+$ pyinstaller gotify-tray-macos.spec
+```
+
 ### Inno setup (Windows)
 
 Create an installer for windows with inno setup from pyinstaller output: