There are a few ways to configure access to your Digital Ocean account. First, you should go and find your API TOKEN

Let's say your token is ABC123, then you can configure you application through Mix Tasks, as follows:

mix doex.init
mix doex.config token ABC123

And to confirm it's set, run

mix doex.config

And the output should look similar to:

ssh_keys: []
token: "ABC123"
url: "https://api.digitalocean.com/v2"

You can achieve similar behvarious through an iEX session iex -S mix

Doex.Config.init
"/Users/aforward/.doex"

Doex.Config.put(:token, "ABC123")
:ok

Doex.Config.read
%{ssh_keys: [], token: "ABC123", url: "https://api.digitalocean.com/v2"}

The information above is cached in the Doex.Worker, so if you are making changes in iEX, you can reload your configs using

iex> Doex.reload
:ok

And you can see the currently cached values with

Doex.config
%{ssh_keys: [], token: "ABC123", url: "https://api.digitalocean.com/v2"}

The order of preference for locating the appropriate configs are

#1 Environment variable storing the path to the file
DOEX_CONFIG=/tmp/my.doex

#2 Elixir built in Mix.Config
use Mix.Config
config :doex, config:  %{token: "SHHHHH"}

#3 A file within "myproject" called .doex
/src/myproject/.doex

# A file within the home directory called .doex
~/.doex

You could overwrite the location, but that's mostly for testing, so unless you have a really valid reason do to so, please don't.