Handle cids passed in as absolute paths
Use eval so that proxying to docker works correclty

Export DOCKER globals now that we're using eval
github command now adds SHAs when building Docker images

Doesn't re-build existing images

Builds a base image if one doesn't exist, always starts building new
images from this base image. As the ADD command busts all caching,
having a base image speeds things up **a lot**
Fully working boot command

Leverages the github command, handles container dependencies and
x-container envs