Must be the public frotend domain, without protocol
Buffer.from(crypto.getRandomValues(new Uint8Array(32))).toString("base64url");
openssl genpkey -algorithm RSA -out private-key.pem -pkeyopt rsa_keygen_bits:2048 -outform PEM
openssl rsa -in private-key.pem -pubout -outform PEM -out public-key.pem
copy both outputs to JWT_PRIVATE_KEY and JWT_PUBLIC_KEY vars.