Reverse proxy config for diyhue works with alexa running on the same host with multiple services on port 80/443 after pairing

hue.conf

set $upstream_app diyhue;
set $upstream_port 80;
set $upstream_proto http;

include /config/nginx/proxy.conf;
include /config/nginx/resolver.conf;

# allow controlling lights
location ~ ^/api/(.*)/lights/(.*)/state[/]*$
{
    proxy_pass $upstream_proto://$upstream_app:$upstream_port/api/$1/lights/$2/state;

    limit_except GET PUT {
        deny  all;
    }
}

# allow controlling groups
location ~ ^/api/(.*)/groups/(.*)/action[/]*$
{
    proxy_pass $upstream_proto://$upstream_app:$upstream_port/api/$1/groups/$2/action;

    limit_except GET PUT {
        deny  all;
    }
}

# deny get configs keys
location ~ ^/api/(.*)/config
{
    deny all;
}

# everything else is read-only
location ~ ^/api/(.*)$
{
    proxy_pass $upstream_proto://$upstream_app:$upstream_port/api/$1;

    limit_except GET {
        deny  all;
    }
}


# https://community.openhab.org/t/howto-hide-hue-bridge-behind-reverse-proxy/79744