fix: use nginx other that localstack/localstack

master is red and the cause looks like a flaky test introduced by #198.
I can't point the flakyness to code itself. And there are not race
detected running `go test --race`.

I spot that we are using a different image
`localstack/localstack:latest` for that test. it is also very big 500mb.

I changed it with nginx to keep consistency.

container_test.go

@@ -319,12 +319,9 @@ func TestShouldStartContainersInParallel(t *testing.T) {
 
 func createTestContainer(t *testing.T, ctx context.Context) int {
  req := ContainerRequest{
- Image: "localstack/localstack:latest",
- ExposedPorts: []string{"4584/tcp", "8080/tcp"},
- Env: map[string]string{
- "SERVICES": "secretsmanager",
- },
- WaitingFor: wait.ForListeningPort("4584/tcp"),
+ Image: "nginx",
+ ExposedPorts: []string{"80/tcp"},
+ WaitingFor: wait.ForHTTP("/"),
  }
  container, err := GenericContainer(ctx, GenericContainerRequest{
  ContainerRequest: req,
@@ -333,7 +330,7 @@ func createTestContainer(t *testing.T, ctx context.Context) int {
  if err != nil {
  t.Fatalf("could not start container: %v", err)
  }
- port, err := container.MappedPort(ctx, "4584")
+ port, err := container.MappedPort(ctx, "80")
  if err != nil {
  t.Fatalf("could not get mapped port: %v", err)
  }