Proxy_pass and rewrite

[Rodrigo Serra Inacio]

Hi, I'm try to do a proxy_pass and rewrite rules like this:

location /directory/ {
                        proxy_pass http://some_url_to_proxy_pass/;
                        expires +10d;
                }

It's working, but I need to repeat the /directory/ on the new url to work
...like this
http://testurl.com/directory/directory/foo/bar/

And I want just one /directory/foo/bar/...then a try a rewrite rule, like
this

location /directory/ {
                        proxy_pass http://some_url_to_proxy_pass/;
                        rewrite /directory/(.*) $1 break;
                        expires +10d;
                }

But, isn't work
Some help, please.
Thanks
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