creating elastic ip. using init=true in docker compose. added start a…

[abessiari]

• added init=true to avoid defunct processes
• added start/down services playbooks
• create elastic ip instead of pointing one
• allowing to run github workflow build_and_test.yml (workflow_dispatch)

[abessiari]

@jamesaoverton @kltm

Hi James. Changes concern deploying to AWS. Checks have passed . Please merge. Thanks.