Allow to run docker-compose without feefeed docker

[boolafish]

:clipboard: fixes: https://github.com/omgnetwork/elixir-omg/issues/1723

requires: https://github.com/omgnetwork/specs/pull/10

Overview

Provide a new docker-compose file: docker-compose.feefeed.yaml that could override the docker-compose with using feefeed instead of file. If not combining the docker-compose files, it will run docker-compose without the need of feefeed.

Changes

• add docker-compose.feefeed.yml file and port out the feefeed from docker-compose.yml
• in make targets, use the composed feefeed service
• [x] TODO: switch cabbage back to master once: https://github.com/omgnetwork/specs/pull/10 merged

Testing

CI