I am setting up a new project (a PHP CMS) that will be used on several websites and will most likely be hosted on the same server, but can be hosted on a different server too. The source of the CMS will be the same for all of these websites, apart of that they will have their own datatabase credentials of course. So apart of a config file the source will always be identical.
Now my question is, what is the best way to keep all the instances of the CMS updated at the same time? That I fix a bug on the 'master' version of the CMS and can somehow push that fix to all other instances?
I've already implemented a way to update the database through CodeIgniter migrations, now I only have to figure out how to update all of the scripts/files automaticly in one go.
I have had an internship 3 years ago at a company that needed the same and I remember that they used XML-RPC to update all of the versions of their source; but reading the codeigniter docs it seems like XML-RPC shouldn't be used in that way. (If I'm not mistaken)
Is it maybe a good practice to do this in git somehow? Setting up a repo for all of the websites? I have no idea. Can someone explain the best practice to me?
