Webwrite with .mlappinstall-file for artifactory-deployment

We want to deploy updates for our appdesigner-apps (.exe as well as .mlappinstall) on our artifactory.

At the moment this is done manually. However, my goal is a matlab-script that

1. compiles the app
2. uploads it to its destination-folder on the artifactory.

My URL and login-informations are correct, I am able to deploy simple data (tested with a simple struct containing doubles and strings).

My question is, how to convert or pack an .mlappinstall for it to be sendable by webwrite.

I have found this FileExchange-solution for uploading to Dropbox via webwrite.

There they seem to encode an arbitrary file as char-array to put into webwrite. This naive approach doesn't work (it returns an empty char-array).

    fid = fopen('myApp.mlappinstall', 'r');
    data = char(fread(fid)');

Also, even if that would work, I would probably have difficulties to discern the correct MediaType and/or CharacterEncoding for the encoded .mlappinstall.

I would really appreciate suggestions for a proper workflow to do, what we want to achieve: compilation and artifactory-deployment of app-designer apps.

Also any help with encoding and sending apps or exe-files with webwrite would help us a lot.

Thank you.