nginx-auth-subrequest.tcl

    location ^~ /uploads/documents/ {
        alias /volume/data/documents/;
        set $auth_pass "$request_uri";
        auth_request /auth/documents;
        auth_request_set $auth_status "$upstream_status";
    }

    location ^~ /auth/ {
        internal;
        proxy_pass "http://back:8080/auth/$auth_pass";
        proxy_pass_request_body off;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header X-Original-Uri "$request_uri";
        proxy_set_header Content-Length "";
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }