Semi-automatic supermarket PDF flyer generator tool (web app)

Hi, I would like to set-up a online tool (with registration and login capabilities) where my customers (usually supermarket owners) can use to generate their promotional flyers by themselves. What we currently do: Customer sends me a list of for example 18 products with name, discounted price and image and i use these details to createa flyer (like attached) in Photoshop. This is time consuming because i need to insert each image, modify descriptions, etc. What i want to have: - Customer portal: A online tool that can be accessed by my customers to choose products from a list (database) which automatically inserts the products image, description and default price in the right spot in the canvas. For example 4 rows of each 4 products, resulting in a flyer of 16 products - Admin portal: i need to be able to import new products with images, descriptions and prices which my customers can choose from. Besides the product information, the customer also needs to be able to configure his logo, address information, additional text he wants to add, website information, etc which is automatically added to the flyer. I have my own docker environment where the tool can be installed, so you can use that to create what is needed. Ive attached a sample of the flyer that i created myself in the attachments. The idea is to have this generated automatically