Add Success message for make cli and init-db

[iamkelllly]

As outcome of PR discussion from #145 , CLI output for make cli and fidesctl init-db should provide positive confirmation of successful build, for example:

...
 => [7/8] COPY ./docs /docs                                                                                0.1s
 => [8/8] WORKDIR /docs                                                                                    0.0s
 => exporting to image                                                                                     0.0s
 => => exporting layers                                                                                    0.0s
 => => writing image sha256:971cda5a856a159d98463b37b91dda612e42fa59d23e9976beb61ec71f0f664d               0.0s
 => => naming to docker.io/library/fides_docs                                                              0.0s

Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them
Setting up a local development shell... (press CTRL-D to exit)
Creating network "fides_default" with the default driver
Creating fides_fidesctl-db_1 ... done
Creating fides_fidesctl_1    ... done
Creating fides_fidesctl_run ... done
Success - fidesctl is now running!
root@e3034bd41166:/fides/fidesctl# fidesctl

[ThomasLaPiana]

both of these have been updated (docs no longer mention make and init-db has lots of green success stuff)