run apt-get update before installing, and clean after installing
use --no-install-recommends when installing dependencies
Merge pull request #6 from varju/missing-apt-get-update

run apt-get update before installing, and clean after installing
Updated to use long parameters
Updated docker-api gem version

Signed-off-by: Martin Jensen <maage@dotmaage.dk>
Updated acceptance test to expect a clean exit

Signed-off-by: Martin Jensen <maage@dotmaage.dk>
don't run as 'nobody', as this causes problems with volume sharing