config/prod.exs

@@ -19,5 +19,5 @@ config :chess, Chess.Repo,
   adapter: Ecto.Adapters.Postgres,
   url: System.get_env("DATABASE_URL"),
   database: "",
-  ssl: false,
+  ssl: true,
   pool_size: 1

nixpacks.toml

@@ -1,5 +1,5 @@
 [phases.install]
-aptPkgs = ["...", "yarnpkg", "build-essential"]
+aptPkgs = ["...", "build-essential"]
 
 [phases.build]
 cmds = ["mix compile", "mix ecto.setup", "pushd assets && yarn install && popd"]