CPanel shared hosting with multiple domains

@captain-sensible Your setup would probably work just as well if you moved the vendor directory out of the individual subdomains so that they share it as a common path. The most tangible benefit of keeping your vendor directory inside the subdomain is that you can upgrade each subdomain individually. You may have some reason for doing this but I've found it more productive to upgrade the vendor directory once and then go across each subdomain and make whichever changes are necessary, respectively, to each app.

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