Is it possible to tell AppImage to mount a particular directory on startup?

I have created an appimage with OpenKiosk. Everything works wonderfully with one exception. Each time I start the appimage a new OpenKiosk profile is created.

Best I can tell, this is because OpenKiosk starts looking at the available profiles and, among other checks, considers the directory from which the latest available profile was run. Since the appimage was last run from a temporary mountpoint, a new profile is created which doesn’t contain the necessary local CA certificates.

Is there a way to tell AppImage to use a particular mountpoint when it starts? I have not seen any discussion of this outside a feature request from last year.

Thank you.