Fix appimage build

scripts/appimage_build.sh

@@ -1,10 +1,9 @@
 #!/bin/bash
 # $1 is the binary location, $2 is the arch
-rm -rv tmp
-mkdir tmp
 mkdir out
-rsync -rv appimage/ tmp
-rsync -rv "$1" tmp/NickelBridge.AppDir/usr/lib/nickelbridge
+rm -rf appimage/NickelBridge.AppDir/usr/lib/nickelbridge
+rsync -rv "$1" appimage/NickelBridge.AppDir/usr/lib/nickelbridge
+chmod +x appimage/NickelBridge.AppDir/AppRun
 wget https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage -O appimagetool
 chmod +x appimagetool
-./appimagetool tmp/NickelBridge.AppDir "out/nickelbridge_1.0.0_$2.AppImage"
+./appimagetool appimage/NickelBridge.AppDir "out/nickelbridge_1.0.0_$2.AppImage"