Building Docker Image for v2.7.1

[topgun100]

We have been using this image very successfully for some years and have accumulated a lot of HTML templates that target this specific docker image. The PDFs are legal documents and it is critical that the rendering does not change. Now has come a time that we are forced to update the base image to Debian 10 but I'm struggling to produce an identical layout.

Do the creators of the repo recall the commit that was used to build the docker image and if there were any customizations that do not exist in this repo?

Your help would be much appreciated. I've tried all the electron 1.3.0 based images and they come out with little variations - even when rebuilding "as is" from Debian 8.