Hi @kornelix, the yml file does the debian to AppImage conversion:
You can run it with
bash -ex Recipe Fotoxx.yml
I asked for a 14.04 deb because if you use a 16.04 one, then only very recent distributions (2016 and later) will be able to run the AppImage, all others will get errors. So users of debian stable or CentOS might not be able the AppImage if you use ingredients that have been compiled on a "too new" build system.
It is your decision which target systems (distributions) you want to target, but generally I recommend to target at least the oldest Ubuntu LTS that is still supported. Which means, consequently, that you should only use functionality that can be compiled for the oldest Ubuntu LTS that is still supported.
I hope this clarifies your question.