Add `extraHosts` option to `runContainer` and `runContainerWithStreaming` so arbitrary `HostConfig.ExtraHosts` entries can be passed when spawning containers.
Expose `getOwnExtraHosts()` from `host-path.ts` and forward the cached entries into scanner and self-updater containers, ensuring custom host aliases (e.g. internal registry hostnames) are available inside those sidecars without additional user configuration.
jarek