Disabling SSL in ElasticSearch and enrolling new nodes

I am trying to start an elasticsearch container with SSL disabled as I want it to be hosted at http://localhost:9200 (not https). With this I want the ability to enroll new nodes. But as I disable the http.ssl (by passing it as environment variable), all the default settings in the elasticsearch.yml also disappear. I want to keep the other settings including enrollment.enable and transport.ssl (as they are used for enrolling new nodes) along with creation of certificates (which do not get created if disable the ssl). So what i did is started the container and disabled http.ssl by myself (with all generated certificates at my disposal), but when i tried to connect other node using the enrollment token it gave me the error that:

configurations for this node is already configured

and exited. Does anyone if it is possible to do in this way?