Nginx hardening

gistfile1.txt

Vanilla image
maurorappa$ docker run -it --rm --entrypoint=sh nginx
# nginx -V
nginx version: nginx/1.19.0
built by gcc 8.3.0 (Debian 8.3.0-6)
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-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -fdebug-prefix-map=/data/builder/debuild/nginx-1.19.0/debian/debuild-base/nginx-1.19.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie’


Hardened
docker run -ti --entrypoint=sh c539dc07eecd
/ # /usr/local/nginx/nginx -V
nginx version: nginx/1.19.0 (nginy)
built by gcc 9.2.0 (Alpine 9.2.0)
built with OpenSSL 1.1.1g  21 Apr 2020
TLS SNI support enabled
configure arguments: —build=yapily --sbin-path=/usr/local/nginx/nginx --conf-path=/etc/nginx/nginx.conf --with-http_ssl_module --with-stream --with-debug --without-http_autoindex_module --without-http_geo_module --without-http_ssi_module --with-http_auth_request_module --with-http_stub_status_module --without-http-cache --with-http_ssl_module --add-module=../ngx_http_ssl_status_module --with-ld-opt='-D_FORTIFY_SOURCE=2,-static,-Wl,-z,noexecstack,relro -pie' --with-cc-opt='-O2 -fomit-frame-pointer -fstack-protector-strong’