We have a need to convert the first page of a PDF file to a PNG image to show a thumbnail of the PDF on our website. We've identified this NPM package but it depends on Imagemagick. As per this StackOverflow thread, it appears that you can upload a Dockerfile to install Imagemagick however, it was a Ruby example.
Can someone please help us on how we can install Imagemagick on App Engine Flex Environment for our Node.js application?