Odoo is a web application and therefore does not need to be published, it only must run and be accessible from outside.

Please make yourself familiar with web applications and deployments and come back if you have specific questions.

A good read to understand a professional deployment is the following: https://www.digitalocean.com/community/tutorial_series/building-for-production-web-applications . Besides that it is not forbidden to read the Odoo documentation, such as https://www.odoo.com/documentation/10.0/setup/install.html and https://www.odoo.com/documentation/10.0/setup/deploy.html for example. Another recommended read is https://antiun.github.io/odoo-reverse-proxy-howto/, but do not use self-signed certificates, use Let's Encrypt instead, for example.