fe_sendauth: no password supplied
...
Couldn't create database for {"adapter"=>"postgresql", "encoding"=>"unicode", "pool"=>5, "username"=>nil, "password"=>nil, "host"=>"0.0.0.0", "database"=>"app_development"}
fe_sendauth: no password supplied
...
Couldn't create database for {"adapter"=>"postgresql", "encoding"=>"unicode", "pool"=>5, "username"=>nil, "password"=>nil, "host"=>"0.0.0.0", "database"=>"app_test"}

default: &default
  adapter: postgresql
  encoding: unicode
  pool: 5
  username: <%= ENV['USERNAME'] %>
  password: <%= ENV['PASSWORD'] %>
  host:     <%= ENV['IP'] %>

development:
  <<: *default
  database: app_development

test:
  <<: *default
  database: app_test

production:
  <<: *default
  database: app_production

gem 'pg', '~> 0.18.2'