Balena Screenly Raspberry pi 3

Hi @kadowa-medien as you mentioned you’re a beginner, lending a tip for next time you run into dependency issues, though I’m not sure if this is a best practice.

I usually omit all version specifications in my requirements.txt file to get a successful build, then replace all versions back in requirements.txt after running pip freeze. I also find that versioning from the package manager (i.e. in the install_packages section of your Dockerfile) leads to more robust and faster builds. Hope this helps!