Drone - Docker build integration

The suggestion is to provide a single build pipeline where

• each dev build contains latest of CS code proper, CMAPI , dockerfile and other components
• similar situation for production builds
• the resulting dockerhub tags should be logically similar ("parallel") to folders containing on prem zip files

We should review GIT repos we use.

We could probably review how MaridDB ES server docker is built and try a common approach

The sky group is working on the way to create the Sky database from a shell script on any account and using any docker tags as parameters.
We could use this to run some of our validation QA on the Sky system.