terraform-provider-docker/testdata/resources/docker_container/testAccDockerContainerMountsConfig.tf

resource "docker_image" "foo_mounts" {
  name = "nginx:latest"
}

resource "docker_volume" "foo_mounts" {
  name = "testAccDockerContainerMounts_volume"
}

resource "docker_container" "foo_mounts" {
  name  = "tf-test"
  image = docker_image.foo_mounts.image_id

  mounts {
    target    = "/mount/test"
    source    = docker_volume.foo_mounts.name
    type      = "volume"
    read_only = true
  }
  mounts {
    target = "/mount/tmpfs"
    type   = "tmpfs"
  }
}