Use leading ampersands instead of trailing ampersands as per the
examples on the docker website. e.g.
long command \
&& another command
Also change the build-all script to update the debian image when
building the base image.
I would prefer to make it on a separate container, but the way that it
and the rutorrent plugin is programmed, it has to be on the same host.
This only installs autodl-irssi and does not include the rutorrent
plugin.