Fix linux appimage task (#4644)

* Fixes #4642

* Fix Linux appimage appicon variable in Linux taskfile

Author: COD3HUNT3R

v3/UNRELEASED_CHANGELOG.md

@@ -23,6 +23,7 @@ After processing, the content will be moved to the main changelog and this file
 
 ## Fixed
 <!-- Bug fixes -->
+- Fix Linux appimage appicon variable in Linux taskfile [PR #4644](https://github.com/wailsapp/wails/pull/4644)
 
 ## Deprecated
 <!-- Soon-to-be removed features -->

v3/internal/commands/build_assets/linux/Taskfile.yml

@@ -47,12 +47,12 @@ tasks:
       - task: generate:dotdesktop
     cmds:
       - cp {{.APP_BINARY}} {{.APP_NAME}}
-      - cp ../../appicon.png appicon.png
+      - cp ../../appicon.png {{.APP_NAME}}.png
       - wails3 generate appimage -binary {{.APP_NAME}} -icon {{.ICON}} -desktopfile {{.DESKTOP_FILE}} -outputdir {{.OUTPUT_DIR}} -builddir {{.ROOT_DIR}}/build/linux/appimage/build
     vars:
       APP_NAME: '{{.APP_NAME}}'
       APP_BINARY: '../../../bin/{{.APP_NAME}}'
-      ICON: '../../appicon.png'
+      ICON: '{{.APP_NAME}}.png'
       DESKTOP_FILE: '../{{.APP_NAME}}.desktop'
       OUTPUT_DIR: '../../../bin'