Parameterizing Environments in Protractor

I am looking to parameterize the baseURL to run in several different environments, like "local," "dev" "test" "prod" etc. I can think of two ways of doing this.

1. Pass the baseURL param at run time.
2. Create a separate GULP task for each baseURL.

I think I want to go with option #2 but wanted to check with some others on this.

Thanks, Tyler