Configure tyk.conf ssl certs via ENV variables

Just wondering if it is possible to configure the ssl certificate location using ENV variables. The issue is that the value is a object/hash array.

"certificates": [
      {
        "domain_name": "mydomain.com",
        "cert_file": "/etc/volume/mydomain/fullchain.cer",
        "key_file":  "/etc/volume/domain.com.key"
      }
    ]