Follow these simple steps to start using Flatpak
Flatpak can be installed from the community repository. Run the following in a terminal:
$ sudo apk add flatpak
$ flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
$ flatpak remote-add --if-not-exists ramatak https://download.ramatak.com/ramatak.flatpakrepo
Note: graphical installation of Flatpak apps may not be possible with Alpine.
To complete setup, return to the download page, and follow the instructions.!