Add docker::run::privileged flag to allow granting extra privileges to containers
move exec after proxy environment variables

when setting proxy configs, restarting docker after a fresh install would fail with

"/bin/sh: 1: exec: http_proxy=http://my_proxy_host/: not found"

moving exec to after the proxy bits allows it to successfully start the process
fix proxy specs
Merge pull request #58 from theasci/add-privileged-flag

Add docker::run::privileged flag to allow granting extra privileges to containers
Merge pull request #56 from afex/patch-1

move exec after proxy environment variables