Use Finch instead of docker on OSX

[perifaws]

Docker desktop is used by default to build the ADE container. Should Finch be preferred?

[iankouls-aws]

The do-framework could handle a request like this one by defining CLI in the .env file. By default it would be set to docker but if the user prefers to use finch, they can just change the configuration line to export CLI=finch.

[iankouls-aws]

I will keep this issue open for now and will close when I add the CLI config as well as modify the management scripts to use $CLI instead of docker.