App fails when using snap version of docker

I am unsure if this is an issue, but maybe we can put a remark somewhere in the installation instructions or prerequesite sections.

I tried to make the app work on my machine, where I used the snap version of docker. This causes some permission issues which can be easily fixed, but, when running case 2, the input file could not be loaded by the app. Maybe something goes wrong with setting up the shared volume.

I switched to the docker and docker.io packages and now everything works fine.