Steps to be followed to configure the certificates for TLS enabled account: 

1. Convert the PEM key to DER using the below command (where a.key is the key file and a_key is the result key file) 
                     openssl pkcs8 -topk8 -inform PEM -outform DER -in "a.key" -nocrypt > a_key 
2. copy the ca.crt, client.crt and the above created file to \deployments\collector-plugins\DockerCollector.ear\lib\config.jar 
3. Decide the alias name you will provide for the docker URL. Use the alias to add the below 3 properties in the runtime.properties file found in the same location. 

docker.<alias>.client-crt=client.crt 
docker.<alias>.ca-crt=ca.crt 
docker.<alias>.client-key=a_key 

After these steps , Restart server and add the account in Hyperglance Admin Panel i.e https://IP_address:8443/#/admin