The stumbling point is “this” Docker app, whose installation instructions provide only a docker run command.
Option 1: Run the command in CLI.
Option 2: Convert the docker run command into a compose.yaml file. Follow @Stux’ tutorial to install Dockge and paste the .yaml file.
Option 3: Install Portainer instead of Dockge. Flip through the multiple tabs in Portainer’s GUI to reproduce the options from command line.
Option 4: Find another torrent app which comes with a pre-built compose file and fall back to option 2.