add mix format to tests

config/test.exs

@@ -6,17 +6,16 @@ import Config
 # to provide built-in test partitioning in CI environment.
 # Run `mix help test` for more information.
 config :lokal, Lokal.Repo,
-  username: "postgres",
-  password: "postgres",
-  hostname: "localhost",
-  database: "lokal_test#{System.get_env("MIX_TEST_PARTITION")}",
+  url:
+    System.get_env("TEST_DATABASE_URL") ||
+      "ecto://postgres:postgres@localhost/lokal_test#{System.get_env("MIX_TEST_PARTITION")}",
   pool: Ecto.Adapters.SQL.Sandbox,
   pool_size: 10
 
 # We don't run a server during test. If one is required,
 # you can enable the server option below.
 config :lokal, LokalWeb.Endpoint,
-  http: [ip: {0, 0, 0, 1}, port: 4002],
+  http: [ip: {0, 0, 0, 0}, port: 4002],
   secret_key_base: "T4DkRImgeMNCcPcTWBCZyKYp3KQ8yyPD33VT4wj6ogbP8fIGUsqmOTNX3clTMrLo",
   server: false