• flatpak-spawn
  • ~/.local/share/applications/mimeinfo.cache
[MIME Cache]
x-scheme-handler/upwork=upwork.desktop;
  • vi ~/.local/share/applications/upwork.desktop
[Desktop Entry]
Name=Upwork
Exec=/opt/Upwork/upwork %U
Terminal=false
Type=Application
Icon=Upwork
StartupWMClass=Upwork
StartupNotify=false
Encoding=UTF-8
MimeType=x-scheme-handler/upwork;
Comment=Upwork Desktop Application
Categories=Utility;