Fix database config to allow native setup

.env

@@ -1,4 +1,5 @@
 COMPOSE_PROJECT_NAME=operationcodebackend
 REDIS_URL=redis://redis:6379/0
 RAILS_ENV=development
+POSTGRES_USER=postgres
 POSTGRES_HOST=operationcode-psql

config/database.yml

@@ -20,8 +20,8 @@ default: &default
   # For details on connection pooling, see rails configuration guide
   # http://guides.rubyonrails.org/configuring.html#database-pooling
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
-  user: postgres
-  host: <%= ENV['POSTGRES_HOST'].present? ? ENV['POSTGRES_HOST'] : 'operationcode-psql' %>
+  user: <%= ENV['POSTGRES_USER'] %>
+  host: <%= ENV['POSTGRES_HOST'] %>
   password: <%= OperationCode.fetch_secret_with name: :postgres_password %>
 
 development: