Docker version of pyrocore: A collection of tools for the BitTorrent protocol and especially the rTorrent client.
Fast resume torrent example:
docker run --rm -it -v /path/to/data/:/root/data \
-v /path/to/files:/root/files \
mjysci/pyrocore \
"chtor -H '/root/data/folder' ../files/*.torrent -o ../files/new"
Replace chtor with other cli commands, check Manual for details.