I've noticed there are lots of images for rTorrent, but just a few based on Alpine Linux, all the others use huge distros like centos or ubuntu. My philosophy is fewer lines of code mean less attack surface. Unfortunately, images based on Alpine Linux are no more than just a simple installation of rTorrent from official repositories and some of these runs from root instead of an unprivileged user. I've added a usefully and modern configuration, easily findable on the official wiki. I then refactored the code to convert it into a modular format, following other tips present in the same wiki.