React Native iOS read image from apps Documents folder

I have to download images to my iOS apps local file system and read them back.

On my simulator I can see file system of my app with directories

/Library/Developer/CoreSimulator/Devices/[UUID]/data/Containers/Data/Application/[UUID]//Documents/Library/tmp

To try out I copied foo.png to /Documents folder and then tried

<Image source={{uri: "file://Documents/foo.png"}} style={{width:100, height:100}}/>

This does not work, any idea whats a way to do this.