message: Don't use sudo in docker prepare script
diff: @@ -3,7 +3,7 @@ set -e
  set -x
  # fix EOL ubuntu package URLs
  -sudo sed -i.bak -r 's/(archive|security).ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
  +sed -i.bak -r 's/(archive|security).ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
  # initial update
  apt-get update
  