Use pixmaps for desktop icon

.github/workflows/release.yml

@@ -44,7 +44,7 @@ jobs:
         mkdir -p build/linux/usr/share/applications
         mkdir -p build/linux/usr/share/icons
         cp -r dist/gotify-tray build/linux/opt/gotify-tray
-        cp gotify_tray/gui/images/gotify-small.png build/linux/usr/share/icons/gotify-tray.png
+        cp gotify_tray/gui/images/gotify-small.png build/linux/usr/share/pixmaps/gotify-tray.png
         cp gotifytray.desktop build/linux/usr/share/applications
         find build/linux/opt/gotify-tray -type f -exec chmod 644 -- {} +
         find build/linux/opt/gotify-tray -type d -exec chmod 755 -- {} +

gotifytray.desktop

@@ -3,7 +3,7 @@ Name=Gotify Tray
 Comment=A tray notification application for receiving messages from a Gotify server.
 Path=/opt/gotify-tray
 Exec=/opt/gotify-tray/gotify-tray
-Icon=gotify-tray
+Icon=/usr/share/pixmaps/gotify-tray.png
 Terminal=false
 Type=Application
 Categories=Network;