Define DB connection strings in runtime config

config/config.exs

@@ -11,14 +11,6 @@ config :gc_index_relay,
   ecto_repos: [GcIndexRelay.Repo],
   generators: [timestamp_type: :utc_datetime]
 
-config :gc_index_relay, GcIndexRelay.Repo,
-  username: System.get_env("POSTGRES_ADMIN_USER"),
-  password: System.get_env("POSTGRES_ADMIN_PASSWORD"),
-  database: System.get_env("POSTGRES_DB"),
-  hostname: System.get_env("POSTGRES_HOST"),
-  stacktrace: true,
-  show_sensitive_data_on_connection_error: true,
-  pool_size: 10
 
 # Configure the endpoint
 config :gc_index_relay, GcIndexRelayWeb.Endpoint,

config/runtime.exs

@@ -23,6 +23,13 @@ end
 config :gc_index_relay, GcIndexRelayWeb.Endpoint,
   http: [port: String.to_integer(System.get_env("PORT", "4000"))]
 
+config :gc_index_relay, GcIndexRelay.Repo,
+  hostname: System.get_env("POSTGRES_HOST"),
+  port: String.to_integer(System.get_env("POSTGRES_PORT") || "5432"),
+  username: System.get_env("POSTGRES_USER"),
+  password: System.get_env("POSTGRES_PASSWORD"),
+  database: System.get_env("POSTGRES_DB")
+
 if config_env() == :prod do
   database_url =
     System.get_env("DATABASE_URL") ||