as i have probably stated before i'm hopeless at writing things up, but just going on things i see getting asked a lot, should cover (in no particular order).
linking between containers , ie between sab and sickbeard
folder and port mapping
where to put the image file
where to put appdata.
Moderator edit: with abject apologies to SparklyBalls, since his post was the first, I'm commandeering the bottom of it to start this feedback topic for the Docker FAQ. I decided to