Configure the Ghost domain name
Ghost requires the domain name to be specified in the /opt/bitnami/ghost/config.production.json file. For example:
url: 'example.com',
Once you have configured the domain name in the config.production.json configuration file, restart all services:
$ sudo /opt/bitnami/ctlscript.sh restart ghost
$ sudo /opt/bitnami/ctlscript.sh restart apache