Configuring only SSL in postgres docker image - Mailing list pgsql-general

I am trying to enable ssl on postgres docker image . The postgres  image should only support SSL . I did configure the  command:" -c ssl=on -c ssl_key_file=/opt/postgresql/server.key -c ssl_cert_file=/opt/postgresql/server.crt"   in the docker compose file. 

I also added the following entry in the pg_hba.conf after commenting all other host entries 

"hostssl   all  all   all md5".

But I am able to make ssl as well as non ssl connections to the postgres image. 

My observation is the command only updates the postmaster.opts file and not the postgres.conf file . 

Could I get some help 

Regards,

Shankar