Uploading images to server

I currently have an app deployed to fly.io and I am having issues trying to upload images straight to the phoenix server.

I want my images to be uploaded to a /static/uploads folder and served from there.

main_photo_location =
      consume_uploaded_entries(socket, :main_photo_location, fn %{path: path}, entry ->
        dest = Path.join([:code.priv_dir(:artistic_translations), "static", "uploads", "#{entry.uuid}-#{entry.client_name}"])
        IO.inspect(dest, label: "DESTINATION")
        # The `static/uploads` directory must exist for `File.cp!/2`
        # and MyAppWeb.static_paths/0 should contain uploads to work,.
        File.mkdir_p!(Path.dirname(dest))
        File.cp!(path, dest)
        {:ok, "/uploads/" <> Path.basename(dest)}
      end)

    [main_photo_location | _] = main_photo_location

    artwork_params =
      Map.put(artwork_params, "photo_locations", photo_locations)
      |> Map.put("main_photo_location", main_photo_location)

Here is an excerpt from my save event to consume the uploaded images.

I have added my uploads folder to the static_path route so that they can be served.

Right now, I can upload images and they appear where I expected them to be, but if the app restarts or is deployed again they break.

So I ssh into my console and check /app/lib/my_app/priv/static and there is no uploads folder, but the images work when I upload them. I don’t want to use an S3 bucket because there are only a handful of images that need to be uploaded for now. How can I upload to a folder called uploads in my static directory and have it persist when I redeploy? I did rely on the File.mkdir_p!(Path.dirname(dest)) command to create the folder if it doesn’t exist. Any ideas as to what I am doing wrong?