set-config-from-file.rb

require 'aptible/auth'
require 'aptible/api'
 
HANDLE = 'your-app'
EMAIL = 'you@example.com'
PASSWORD = ''

KEY = 'FOOBAR'
FILE = '/path/to/file'
 
token = Aptible::Auth::Token.create(email: EMAIL, password: PASSWORD)
app = Aptible::Api::App.all(token: token).find do |app| 
  app.handle == HANDLE
end
operation = app.create_operation!(
  type: 'configure',
  env: { KEY => File.read(FILE) }
)
sleep 1 until operation.reload.status == 'succeeded'