If you're "just" installing server-side software, then maybe if the price is right.

If you are also offering to get a working uncustomized copy of popular software installed (e.g. Wordpress) then that's more interesting. Some bits of software need a few manual tweaks/config changes to get working. This is especially true for when you move away from Apache and to nginx. Nothing rocket sciency, but still time consuming and so could be outsourced.