How to automate the deployment of your web applications?

Question

System administration

I have a site that is something like a specific store written in php and it is written somewhere by 40% but 6 people are already using it.
And I have a question how can I set up the deployment of web applications on servers, because I would very much like to automate and control this.
That is the type of mini hosting. In order for a person to enter his personal account, click and everything would turn around for him and he would be able to use his site.

Answer 1

Do it on ansible once you know it

Answer 2

What prevents you from writing a deployment script on the same Python?
Have you deployed a working site somehow? Here also write down all steps in a script.