Hack Ghost core and release it

if you want to hack Ghost core you need to follow
https://docs.ghost.org/docs/working-with-ghost and
https://docs.ghost.org/docs/working-with-the-admin-client

Once you done all your hack job, just run grunt release command under your ghost folder.

grunt release 

Once it completed, you will get a zip file:
./.dist/release/Ghost-1.16.1.zip

Then run your hacked ghost under a new empty folder:
ghost install --zip /path/to/.dist/release/Ghost-1.16.1.zip 

 --zip              Path to Ghost release zip to install         [string]