ERC721 how direct function to read one by one files from specific folder in project root directory

Smart Contracts
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1

greeting
am finish "solidity path from cryptozombies course" and watch numbers of video tutorials, but can not find how i can make the contract read image from folder in project root directory.

1- there's "x" number of images files that stored in folder called images in project root directory.
2- try create function that will go to folder in project root directory, let's assume it called "images". then convert them to base64.

3- next function do what i mention above, but i can not find how direct it to this specific folder that called "images" to read from it the images?

function svgToImageURI(string memory svg) public pure returns (string memory) {
        string memory baseURL = "data:image/svg+xml;base64,";
        string memory svgBase64Encoded = Base64.encode(bytes(string(abi.encodePacked(svg))));
        return string(abi.encodePacked(baseURL,svgBase64Encoded));
    }

thanks in advance.