[Feature] Deployment Configuration

[shinybrar]

Add deployers configuration to definitions.workspace

---
deployers:
  <site>:
    "docker":
       <custom1>:
       <custom2>:
       mounts: Derived from Docker Spec
       networks: Derived from Docker Spec

e.g.

from docker import Mount

deployers:
  site:
    docker:
      volumes: List[Mount]

Things to do:

• Make sure is a set of sites from the main config
• Derived mount spec from docker compose spec itself, rather than writing it.