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Skypeforlinux: fix tray icon

cat ~/.npmrc
  prefix=~/.node-modules

mkdir /tmp/skype
cd /tmp/skype
cp /opt/skypeforlinux/resources/app.asar ./
npm install -g asar
asar extract /usr/share/skypeforlinux/resources/app.asar ./skypeapp
cd ./skypeapp/images/tray/linux
ls -1 | grep "@2x" | while read -r pngFile; do cp "./$pngFile" "./${pngFile//$@@2x/}"; done
cd ../../../../
asar pack ./skypeapp ./app.asar
sudo cp ./app.asar /opt/skypeforlinux/resources/app.asar
2020