Set profile from config or app

Is it possible to set the aws cli profile from within the config or app? I know it is possible to deploy with --profile profile-name, but I would be nice if it would do this based on what's set within config or app. Help is much appreciated.

Start by tracing how the deploy command handles the existing --profile profile-name option and how values are read from config or app. Done means a profile set in the supported configuration or application location is used for deployment without requiring the command-line option.

Written by the indexing model from the issue text.