@type t() :: %TestcontainerEx.Container.Config{
  auth: String.t() | nil,
  auto_remove: boolean(),
  bind_mounts: [map()],
  bind_volumes: [map()],
  check_image: Regex.t() | nil,
  cmd: [String.t()] | nil,
  container_id: String.t() | nil,
  copy_to: [map()],
  dns: [String.t()],
  domainname: String.t() | nil,
  environment: %{required(atom() | String.t()) => String.t()},
  exposed_ports: [{integer(), integer() | nil}],
  extra_hosts: [{String.t(), String.t()}],
  force_reuse: boolean(),
  hostname: String.t() | nil,
  image: String.t(),
  ip_address: String.t() | nil,
  labels: %{required(String.t()) => String.t()},
  log_consumer: Logger.level() | nil,
  memory: integer() | nil,
  name: String.t() | nil,
  nano_cpus: integer() | nil,
  network: String.t() | nil,
  network_mode: String.t() | nil,
  privileged: boolean(),
  pull_policy: TestcontainerEx.PullPolicy.t() | nil,
  request_id: String.t() | nil,
  restart_policy: String.t() | nil,
  reuse: boolean(),
  stop_signal: String.t() | nil,
  stop_timeout: integer() | nil,
  user: String.t() | nil,
  wait_strategies: [struct()],
  working_dir: String.t() | nil
}

Container configuration.

Fields:

• :image — Docker image reference (e.g. "postgres:15-alpine").
• :cmd — override the image's default command.
• :environment — map of environment variables.
• :auth — optional Base64-encoded auth token for private registries.

• :exposed_ports — list of {container_port, host_port | nil} tuples.

• :ip_address — resolved IP address of the running container.
• :wait_strategies — list of strategies determining when the container is ready.
• :privileged — run the container in privileged mode.
• :bind_mounts — list of bind mount specifications.
• :bind_volumes — list of named volume mount specifications.
• :copy_to — list of files to copy into the container at startup.
• :labels — map of Docker labels to attach to the container.
• :auto_remove — automatically remove the container when it stops.
• :container_id — ID of the running container (set after start).
• :check_image — optional regex to validate the image name.
• :network_mode — Docker network mode (e.g. "host", "bridge").
• :network — network name to connect the container to.
• :hostname — container hostname.
• :name — optional stable container name.
• :reuse — when true, an existing container with the same config may be reused.
• :force_reuse — force reuse even if the container is stale.
• :pull_policy — controls when the image is pulled; see TestcontainerEx.PullPolicy.
• :log_consumer — optional Logger level to stream container logs to (:debug, :info, etc.).
• :request_id — correlation ID for tracing a start_container call.
• :memory — memory limit in bytes (Docker HostConfig.Memory).
• :nano_cpus — CPU limit in nano CPUs (Docker HostConfig.NanoCpus).
• :restart_policy — restart policy name (e.g. "always", "on-failure:5").
• :dns — list of DNS servers (Docker HostConfig.Dns).
• :extra_hosts — list of {hostname, ip} extra host entries (Docker HostConfig.ExtraHosts).
• :user — user (UID or user:group) to run the container as (Docker User).
• :working_dir — working directory inside the container (Docker WorkingDir).
• :stop_signal — stop signal sent to the container (Docker StopSignal).
• :stop_timeout — stop timeout in seconds (Docker HostConfig.StopTimeout).
• :domainname — DNS domain name for the container (Docker Domainname).