run.sh caddn -> codyreading/caddn

[PINTO0309]

When following our tutorial on using Docker, the pulled Docker Image name did not match the command used to run run.sh, resulting in an error with the docker run command.
https://github.com/TRAILab/CaDDN/blob/master/docker/DOCKER.md#get-a-docker-image

docker pull codyreading/caddn

CMD="docker run -it \
    --runtime=nvidia \
    --net=host \
    --privileged=true \
    --ipc=host \
    --volume="/tmp/.X11-unix:/tmp/.X11-unix:rw" \
    --volume="$XAUTHORITY:/root/.Xauthority:rw" \
    --env="DISPLAY" \
    --env="QT_X11_NO_MITSHM=1" \
    --hostname="inside-DOCKER" \
    --name="CaDDN" \
    --volume $PROJ_DIR/checkpoints:/CaDDN/checkpoints \
    --volume $PROJ_DIR/data:/CaDDN/data \
    --volume $PROJ_DIR/output:/CaDDN/output \
    --volume $PROJ_DIR/tools:/CaDDN/tools \
    --volume $PROJ_DIR/.git:/CaDDN/.git \
    $DATA_VOLUMES \
    $PCDET_VOLUMES \
    --rm \
    caddn bash <--- codyreading/caddn