After receiving the signed certificate of your site, the Hub's CA certificate, and the Hub's HTTPS certificate, you will need to import them into your shrine.keystore. Navigating to the shrine.keystore file, you will need to run these commands in order:
$ keytool -import -v -alias $HUB_CA_CERT_ALIAS -file $HUB_CA_CERT_ALIAS.crt -keystore shrine.keystore -storepass $KEYSTORE_PASSWORD |
$ keytool -import -v -alias $HUB_HTTPS_CERT_ALIAS -file $HUB_HTTPS_CERT_ALIAS.crt -keystore shrine.keystore -storepass $KEYSTORE_PASSWORD |