Can we use dokku config:set environment variables?

[danielpetrica]

I'm trying to inject the PHP agent (or any other agent) of new relic inside the containers for better visibility inside my project usage.
I see that I can specify the needed app name and license key using debconf by adding the following code to the apt-debconf file

newrelic-php5 newrelic-php5/application-name string "My App Name"
newrelic-php5 newrelic-php5/license-key string "YOUR_LICENSE_KEY"

But this way, I'll have to hard code my license key and app name inside the git repository.
Can I use the dokku configs assigned to the app instead of hard coding the values?
This way I could use the same git repo for similar projects (for WordPress site for example)