add proxy header to nginx config example ``` proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; ``` Signed-off-by: rock2dust <its@baronbunny.cn> Signed-off-by: rock2dust <its@baronbunny.cn> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
