sm-docker build does not work when delaing with private Pypi repos

If a Docker file installs libraries from a private PyPi repo (a repo. within a VPC), the docker build fails from the codebuild project. The reason being, the code build project is not configured to run within a VPC.

1. Enhance sm-docker to accept additional codebuild parameters so that it can accept the VpcConfig (or)
2. Enhance sm-docker to accept a config file where all the command line options can be passed in, allowing easy of passing in more options (including authentication/authorization details to the codebuild project)
3. Allow for "custom" naming of codebuild projects (passing in the name for the codebuild project as n argument or in the config file)