Using a Custom Appimagetool Binary
Specify your own appimagetool binary.
Although appimagetool binaries are included with PyDeployment, you can instead
choose to use your own appimagetool binary by providing the path to the binary
to APPIMAGETOOL in the environment file or --appimagetool on the command
line.
Additionally, you can choose your own AppImage runtime by providing the path to
the file to RUNTIME_FILE in the environment file or --runtime-file on the
command line. If you specify the value to be an empty string (i.e. ""), then
the latest runtime will be downloaded, which is the default behavior of the
appimagetool binary.