Remove Excess Docker-Compose Configuration

[wesleyboar]

Overview

We should be able to remove postgres and elasticsearch from Docker Compose configuration.

To Do

1. Review #184 (comment), #184 (comment), #184 (comment), and #184 (comment).
2. Determine which changes are safe and how to do them.
3. Do it, and test each project.

[wesleyboar]

Is this how I do that?

1. Sync container docker-compose.dev.yml (from Core-CMS) to local files as docker-compose.core-cms.yml:

   docker-compose.dev.yml

       volumes:
         - ./docker-compose.core-cms.yml:/code/docker-compose.dev.yml
   

2. Make postgres and elasticsearch services extend docker-compose.core-cms.yml:

   docker-compose.dev.yml

     postgres:
       extends:
         file: ../docker-compose.core-cms.yml
         service: postgres
   
     elasticsearch:
       extends:
         file: ../docker-compose.core-cms.yml
         service: elasticsearch