Add manual install documentation

[Snugug]

It appears as if the only documented way to install Volta is curl|bash which is usually a security no-no. Can you provide install documentation for pulling directly from GitHub releases, like how Code Server does for their install docs?

Thanks!

[charlespierce]

Hi @Snugug, thanks for the suggestion! I believe we have this in our docs (though admittedly it's not immediately obvious where to find it). Does the "Custom Installers" section of https://docs.volta.sh/advanced/installers give the information you need?

We can probably come up with some ways to improve the discoverability of those docs, even if it's just adding a link from the Getting Started page.