fix workflow

Author: jarlah

.github/workflows/elixir.yml

@@ -51,7 +51,7 @@ jobs:
     - name: Install dependencies
       run: mix deps.get
     - name: Run tests
-      run: mix citest
+      run: MIX_ENV=test mix citest
     - name: Verify version
       run: |
         mix run -e "if(Testcontainers.Constants.library_version() == Mix.Project.config()[:version], do: IO.puts("OK"), else: System.halt(\"version mismatch\"))"

mix.exs

@@ -39,8 +39,8 @@ defmodule TestcontainersElixir.MixProject do
     ]
   end
 
-  defp elixirc_paths(:prod), do: ["lib", "docker_engine_api"]
-  defp elixirc_paths(_),     do: ["lib", "test/support", "docker_engine_api"]
+  defp elixirc_paths(:test), do: ["lib", "test/support", "docker_engine_api"]
+  defp elixirc_paths(_), do: ["lib", "docker_engine_api"]
 
   def application do
     [