For a while now I 've been using this docker image to build a lineage based rom with microg. One thing I want was to add more repositories to the image I am building, for example nanolx’s repository. An example of how to do this by adding xml files to the build is shown here.
My main problem is that this file requires the public key. I am also assuming it’s encoded in some way I don’t know. On the other hand various repositories only show their key fingerpring, not the public key. Does anyone know how to get that information?
P.S. I use Ubuntu MATE on my laptop, therefore it 'd be very easy for me if there’s a list of terminal commands that get a public key finderprint and output a public key in the encoded used in those xml files. Any other solution offered would also be very welcome of course.