Dataset containing countries ISO codes and images of their borders

Looking for a dataset which would contain all countries with images of their borders without any text data on it.

This is closest to what I want https://www.geoboundaries.org/index.html#tabs1-css

Problem is that these images contain frame and text around country borders:

This could be cut if it always had same dimensions but unfortunately these images differ a lot. Where do I find this kind of dataset?

All credit goes to @Mike, who has commented my original question.

After little tweaks this gets the job done:

https://codesandbox.io/s/vector-layer-forked-bx2pi1?file=/main.js