Update the Ghost CLI

Some operations such as upgrading Ghost require the updating of the Ghost CLI. To update the Ghost CLI follow these steps:

$ cd /opt/bitnami/apps/ghost/lib
$ sudo npm install ghost-cli

TIP: If the npm install command fails, run the following:

$ sudo mv package.json package.json.back
$ sudo npm install ghost-cli
$ sudo mv package.json.back package.json