[FYST-2134] Set deploy_defaults for deployed databases (staging/production) (#29)

* Set deploy_defaults for deployed databases (staging/production)

Author: arinchoi03

config/database.yml

@@ -19,21 +19,26 @@ test:
   host: localhost
   port: 5432
 
+deploy_default: &deploy_default
+  <<: *default
+  host: <%= ENV["DATABASE_HOST"] %>
+  username: <%= ENV["DATABASE_USER"] %>
+  password: <%= ENV["DATABASE_PASSWORD"] %>
+
 # Store production database in the storage/ directory, which by default
 # is mounted as a persistent Docker volume in config/deploy.yml.
 production:
   primary:
-    <<: *default
-    database: storage/production.sqlite3
+    <<: *deploy_default
   cache:
-    <<: *default
-    database: storage/production_cache.sqlite3
+    <<: *deploy_default
     migrations_paths: db/cache_migrate
   queue:
-    <<: *default
-    database: storage/production_queue.sqlite3
+    <<: *deploy_default
     migrations_paths: db/queue_migrate
   cable:
-    <<: *default
-    database: storage/production_cable.sqlite3
+    <<: *deploy_default
     migrations_paths: db/cable_migrate
+
+staging:
+  <<: *deploy_default