Add icon generation to release workflow

Generate DNSSwitcher.icns from icon.png during the release job.
Also ignore .icns and .iconset in .gitignore and remove the app iconset
in Makefile's clean target.

Author: kacigaya

.github/workflows/release.yml

@@ -11,6 +11,21 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Generate icon
+        run: |
+          mkdir -p DNSSwitcher.iconset
+          sips -z 16 16     icon.png --out DNSSwitcher.iconset/icon_16x16.png
+          sips -z 32 32     icon.png --out DNSSwitcher.iconset/icon_16x16@2x.png
+          sips -z 32 32     icon.png --out DNSSwitcher.iconset/icon_32x32.png
+          sips -z 64 64     icon.png --out DNSSwitcher.iconset/icon_32x32@2x.png
+          sips -z 128 128   icon.png --out DNSSwitcher.iconset/icon_128x128.png
+          sips -z 256 256   icon.png --out DNSSwitcher.iconset/icon_128x128@2x.png
+          sips -z 256 256   icon.png --out DNSSwitcher.iconset/icon_256x256.png
+          sips -z 512 512   icon.png --out DNSSwitcher.iconset/icon_256x256@2x.png
+          sips -z 512 512   icon.png --out DNSSwitcher.iconset/icon_512x512.png
+          cp icon.png           DNSSwitcher.iconset/icon_512x512@2x.png
+          iconutil -c icns DNSSwitcher.iconset -o DNSSwitcher.icns
+
       - name: Build app bundle
         run: make app
 

.gitignore

@@ -20,6 +20,8 @@ DerivedData/
 *.app
 *.dmg
 *.pkg
+*.icns
+*.iconset
 
 # Release archives
 *.zip

Makefile

@@ -35,3 +35,4 @@ clean:
 	swift package clean
 	rm -rf .build
 	rm -f $(DMG_NAME)
+	rm -rf $(APP_NAME).iconset