Calibre + DeDRM plugin are the best way to remove DRM from your books and convert them to other formats. Trouble is, these tools are difficult to setup, especially on Linux. It can easily take days of effort to figure out all the details to get it working.
To address this problem I’ve made a Docker image that automates all of the setup details, so you don’t need to worry about any of it.
Follow the simple instructions here, and regain ownership of your books in minutes (assuming you have Docker already installed):
N1nja Hacks 