Adding File Upload to Product Page WITH NO APP

[nsr]

I'm trying to add this code to my shopify product page :

<div class="product-form__item product-form__item--logo">
<label for="custom_photo">Upload image</label>
<input required id="custom_photo" type="file" name="properties[Logo]" class="product-form__input">
</div>

it did work and showing up but the issue is when i click add to cart there is no image id and when the customer checkout i receive no image + customers can add to cart without uploading an image like if it not required like if it doesn't work 
please help it's rider theme i'm using (similar to dawn theme )