Add note about using a custom Node Mirror

[stramel]

Documentation is

• Missing
• Outdated
• Confusing
• Not sure

Explain in Detail

When attempting to use Vite+ Environment management feature with my work's internal artifactory (which is enforced), I'm unable to do most features due to not having access to the default Node mirror (https://nodejs.org/dist). I was able to dig through the source to find that I could utilize VITE_NODE_DIST_MIRROR to override the default.

Your Suggestion for Changes

I suggest mentioning the ability to override with a custom Node mirror within the environment page.

Relevant Page

https://viteplus.dev/guide/env

Reproduction (Optional)

No response

Steps to reproduce (Optional)

No response