add custom desktop file

src-tauri/application-cathode.xml

@@ -2,8 +2,9 @@
 <mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
     <mime-type type="application/cathode">
         <comment>ray file</comment>
-        <icon name="application-cathode"/>
-        <glob-deleteall/>
+        <sub-class-of type="application/zip" />
+        <icon name="application-cathode" />
+        <acronym>RAY</acronym>
         <glob pattern="*.ray"/>
     </mime-type>
 </mime-info>

src-tauri/cathode-tube.desktop

@@ -0,0 +1,10 @@
+[Desktop Entry]
+Type=Application
+Icon=cathode-tube
+Name=Cathode
+Exec=cathode-tube %U
+Terminal=false
+Hidden=false
+Categories=Graphics; Video
+Comment=Small app for PNG-tubing
+MimeType=application/cathode

src-tauri/tauri.conf.json

@@ -35,7 +35,9 @@
       "copyright": "",
       "deb": {
         "files" : {
-            "/usr/share/mime/packages/application-cathode.xml": "application-cathode.xml"
+            "/usr/share/applications/cathode-tube.desktop": "cathode-tube.desktop",
+            "/usr/share/mime/packages/application-cathode.xml": "application-cathode.xml",
+            "/usr/share/icons/hicolor/256x256/mimetypes/aplication-cathode.png": "icons/application-cathode-256.png"
         },
         "depends": []
       },