Don't override the Docker default container binding IP address.
Fix the 1 broken test.
Merge pull request #68 from didip/master

Fix the 1 broken test.
HTTP basic authentication for registry access
Get registry credentials from cli options
Allow specifying the registry credentials in the rake task
Manually re-merge conflicted changes.
Add more documetation on registry auth, reformat a bit.
Small README cleanup.
Fix bad spec that was expecting the wrong format.
Rev for release 1.3.0.
Add @skarap and @jellybob to CONTRIBUTORS.md.
Merge pull request #66 from newrelic/use-default-ip

Don't override the Docker default container binding IP address
Rev for release 1.3.1.