Integrate flags better with the development flow a Docker developer.
Add a shell function to make invocation of tests easy.
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Added an environment variable which can be used to pass in the docker volume for the container. This allows caching the pulled images between runs, preventing unnecessary image pulls.
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
