Proxy another WordPress site as a subdirectory

Nginx-snippet.conf

    location /blog/ {

        location ~ \.php$ {
            rewrite ^/blog(.*) $1 break;
            add_header X-url $1;
            proxy_set_header X-Real-IP  $remote_addr;
            proxy_set_header X-Forwarded-For $remote_addr;
            proxy_set_header Host $host;
            proxy_pass https://127.0.0.1:8023;
        }
        location ~* \.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|css|rss|atom|js|jpg|jp            
            rewrite ^/blog(.*) $1 break;
            add_header "Access-Control-Allow-Origin" "*";
            access_log off;
            log_not_found off;
            expires max;
            proxy_set_header X-Real-IP  $remote_addr;
            proxy_set_header X-Forwarded-For $remote_addr;
            proxy_set_header Host $host;
            proxy_pass https://127.0.0.1:8023;
        }

        rewrite ^/blog(.*) $1 break;

        proxy_set_header X-Real-IP  $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header Host $host;
        proxy_pass https://127.0.0.1:8023;

    }