We currently have two methods of startup:

• system-shell for single-node dev instances
• deploy-tools for full cluster deployments

Synchronizing every change to the specs between these two repositories and their resulting Docker images is tedious and error-prone. We should have a single unified repository / Docker image that we use for deploying NDS Labs.

This ticket is complete when ndslabs-system-shell and ndslabs-deploy-tools have been merged into a single Dockerfile, and the resulting image is pushed to Docker Hub.