CircleCI build is failing due to NO PUBKEY

[rit1010]

That looks much like the issue here

CircleCI cannot find comm>=0.1.3

Hi, I was having an issue of CircleCI not being able to find the package comm>=0.1.3 such that my CI failed with the following error: ERROR: Could not find a version that satisfies the requirement comm>=0.1.3 (from ipywidgets->jupyter) (from versions: 0.0.1) ERROR: No matching distribution found for comm>=0.1.3 (from ipywidgets->jupyter) This arose from the installation of jupyter, which requires the dependency ipywidgets that requires comm>=0.1.3. According to PyPI, the latest version of com…

you reference python 3.x a lot in the script but are then using the command pip, which will relate to the Ubuntu-installed python 2.x environment. The command pip3 exists for working with python 3.x

The issue here is more about your deployment and use of Ubuntu than the CircleCI tool set, so the amount of help I can provide will be limited as I do not know python. You may want to simplify your build script and debug the process step by step.