Regular expression for location?

Question

Nginx

It is necessary to proxy requests like /something.com
I tried it in different ways, as a result, both /something.com and /some/something.com were picked up (which is already superfluous)
I read the docks, I know that PCRE, I checked my regular expressions in ruby ​​and php, it works there , not in nginx.
Thank you in advance

Answer 1

Like ^/[^\.\/]+?\. fits

Answer 2

And so we tried:

/^\/[^ \/ .*?]$/

?