Save SSL sertificate from server and add to trustStore

Get SSL sertificate from server:

$ openssl s_client -showcerts -connect HOST:PORT </dev/null 2>/dev/null | openssl x509 -outform PEM > FILE.PEM


Add sertificate to trustStore

$ keytool -import -file FILE.PEM -alias ALIAS -keystore KEYSTORE.JKS -storepass PASSWORD