Update readme.md

Author: macbre

readme.md

@@ -8,6 +8,17 @@ As this project is based on the official [nginx image](https://hub.docker.com/_/
 docker pull macbre/nginx-brotli:1.17.10
 ```
 
+# What's inside
+
+```
+$ docker run -it macbre/nginx-brotli nginx -V
+nginx version: nginx/1.17.10
+built by gcc 9.2.0 (Alpine 9.2.0) 
+built with OpenSSL 1.1.1d  10 Sep 2019
+TLS SNI support enabled
+configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-http_ssl_module --with-http_realip_module --with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_stub_status_module --with-http_auth_request_module --with-http_xslt_module=dynamic --with-http_image_filter_module=dynamic --with-http_geoip_module=dynamic --with-http_perl_module=dynamic --with-threads --with-stream --with-stream_ssl_module --with-stream_ssl_preread_module --with-stream_realip_module --with-stream_geoip_module=dynamic --with-http_slice_module --with-mail --with-mail_ssl_module --with-compat --with-file-aio --with-http_v2_module --add-module=/usr/src/ngx_brotli
+```
+
 > [nginx release notes](https://nginx.org/en/CHANGES)
 
 # SSL Grade A+ handling