Laravel Storage url

I was asked to create several websites for a non-profit organization, but using a single database and a single administration area.

I managed to create the admin area and two websites, but I’m having trouble displaying images on the websites.

I have three URLs, which are as follows (I’m on a local environment):

www.admin.test
www.website1.test
www.website2.test 

etc…

The store method of my controller is simple but functional:

$request->validate([
    'title' => 'required',
    'content' => 'required',
    'website_id' => 'required',
]);

$filename = time() . '.' . $request->post_image->extension();

$path = $request->file('post_image')->storeAs(
    'posts_featured_images',
    $filename,
    'public'
);

$post = Post::create([
    'title' => $request->title,
    'slug' => $slugify->slugify($request->title),
    'website_id' => $request->website_id,
    'user_id' => Auth::user()->id,
    'content' => $request->content
]);

$image = new PostImage();
$image->path = $path;
$image->post_id = $post->id;

$post->post_image()->save($image);

I have no problem viewing the image in my administration area (www.admin.test) in the edit view or show with this:

<img src="{{ Storage::url($post->post_image->path) }}" class="img-fluid" width="50%">

However, I don’t know how to display this image on www.website1.test, for example.

In my env file, I added this line: ADMIN_URL=http://admin.test to retrieve it in my views, but it doesn’t work.

I tried this, for example, but it doesn’t work.

<img src="{{ Storage::url(env('ADMIN_URL')) }}/{{ $post->post_image->path }}" alt="Image">

So my question is: is it possible to display my images on all my websites, and if so, how?

Thank you all in advance!