How to set linux app icon in linux software installer

[Thesiva7]

How to set linux app icon in linux software installer.

My build configuration for linux is below.

"linux": {
"desktop": {
"StartupNotify": "false",
"Encoding": "UTF-8",
"icon": "assets/icons/my-app-256x256.icns"
},
"target": [
"deb"
],
"icon": "assets/icons/my-app-256x256.icns",
"category": "AudioVideo",
"synopsis": "Multi Video Conference Solution",
"description": "This application is for multi video conference room solutions"
},

any know how to provide app in linux software installer. help me.
Thanks.