Release feature catchup
- Add in ability to have local docker-compose.yml.
- Adjust commands for newer/changed parameters.
- Adjust commands to suit updated drush version.
- Remove unnecessary things from linux docker-compose.
- Setup networking in linux so it works like the mac to allow the same testing.
- Adjust dsh script for early exit if already in docker.
- Provide helper script for easier/common ssh with linux and mac.