I have set up local stack within docker-compose so that I can do integration testing with s3, however with my setup I seem to be running into a nxdomain error that I can’t seem to figure out, below is my setup and some of my code for testing - am I missing something or doing something wrong? I know that I was originally using host networking but switched to bridge network

cross posted here: LocalStack Discuss Archive

error

#0 16.15 20:51:48.018 application=ex_aws domain=elixir file=lib/ex_aws/request.ex function=request_and_retry/7 line=78 mfa=ExAws.Request.request_and_retry/7 module=ExAws.Request pid=<0.591.0> [warn]  ExAws: HTTP ERROR: :nxdomain for URL: "http://localstack:4566/test-bucket/" ATTEMPT: 9
#0 18.28 
#0 18.28 20:51:50.156 application=ex_aws domain=elixir file=lib/ex_aws/request.ex function=request_and_retry/7 line=78 mfa=ExAws.Request.request_and_retry/7 module=ExAws.Request pid=<0.591.0> [warn]  ExAws: HTTP ERROR: :nxdomain for URL: "http://localstack:4566/test-bucket/" ATTEMPT: 10
#0 18.31 
#0 18.31 
#0 18.31   1) test get_object/2 get existing file from s3 (S3Test)
#0 18.31      test/s3_test.exs:12
#0 18.31      ** (ExAws.Error) ExAws Request Error!
#0 18.31      
#0 18.31      {:error, :nxdomain}
#0 18.31      
#0 18.31      code: ExAws.request!(ExAws.S3.put_bucket("test-bucket", "us-west-2"))
#0 18.31      stacktrace:
#0 18.31        (ex_aws 2.3.2) lib/ex_aws.ex:89: ExAws.request!/2
#0 18.31        test/s3_test.exs:28: (test)

config/test.exs

config :ex_aws,
  access_key_id: "test",
  secret_access_key: "test",
  region: "us-west-2"

config :ex_aws, :s3,
  scheme: "http://",
  host: "localstack",
  port: 4566,
  region: "us-west-2"

s3_test.exs

test "get existing file from s3" do
      # Create some random bytes to store in the file.
      contents = :crypto.strong_rand_bytes(100)

      # We set up an on_exit callback to empty and then delete the bucket
      # when the test exit, so that the next test has a clean slate.
      on_exit(fn ->
        "test-bucket"
        |> ExAws.S3.list_objects()
        |> ExAws.stream!()
        |> Enum.each(&ExAws.request!(ExAws.S3.delete_object("test-bucket", &1.key)))

        ExAws.request!(ExAws.S3.delete_bucket("test-bucket"))
      end)

      # Create bucket.
      ExAws.request!(ExAws.S3.put_bucket("test-bucket", "us-west-2"))

      # Upload a file.
      ExAws.request!(ExAws.S3.put_object("test-bucket", "my/random/file", contents))

      # Now, we run our code and assert on its behavior.
      {:ok, object} = S3Helper.get_object("test-bucket", "my/random/file")

      assert(Map.has_key?(object, :status_code) and object.status_code == 200)
    end

s3 logic

 @ex_aws_mod Application.compile_env(:tls_worker, [:test_doubles, :ex_aws], ExAws)

  def get_object(bucket, path) do
    ExAws.S3.get_object(bucket, path)
    |> @ex_aws_mod.request(region: Application.get_env(:ex_aws, :region))
  end

docker-compose

version: "3"
services:
  test:
    build:
      context: .
      dockerfile: Dockerfile.test
      args:
        MIX_ENV: test
        ENVIRONMENT: test
    volumes:
      - /app
    working_dir: /app
    command: MIX_ENV=test mix test
    depends_on:
      - localstack
    networks:
      - test
    stdin_open: true
    tty: true

  localstack:
    container_name: "${LOCALSTACK_DOCKER_NAME-localstack_main}"
    image: localstack/localstack
    environment:
      - AWS_DEFAULT_REGION="us-west-2"
      - SERVICES="s3"
      - EDGE_PORT="4566"
    networks:
      - test
    ports:
      - "4566:4566"  
    volumes:
      - "${LOCALSTACK_VOLUME_DIR:-./volume}:/var/lib/localstack"
      - "/var/run/docker.sock:/var/run/docker.sock"

networks:
  test:
    driver: bridge