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Thank you for contacting DreamHost Support! I’ll be happy to help today!
I'm afraid that on Shared Hosting it is not possible to do that, nor on the VPS, as it is also a form of shared hosting, albeit more isolated and robust.
You could do it with a Dedicated server or our economical cloud solution, DreamCompute. You can find out more about these here:
https://dreamhost.com/hosting
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