anchor.diff:    image_name="$IMAGE_PREFIX/$1"
     container_name=${CONTAINER_NAMES[$1]}
     if container_created "$container_name"; then
  +    pre_start_hooks $1
       if is_running "$container_name"; then
         if is_ghost "$container_name"; then
           restart_container $1
  
positive.code:     else
        docker start $container_name
      fi
      if [ "$2" = "--attach" ]; then
        attach_container $container_name
      fi
  
negative.code:   container_name="${CONTAINER_NAMES[$1]}"
    image="$IMAGE_PREFIX/$1_$VERSION"
    if ! is_running $container_name; then
        pre_setup_hooks $1
        docker run $opts $BACKGROUND --name=$container_name $image
        post_setup_hooks $1
    else
        echo "$container_name is already running."
    fi
  