upstream drone {
  server 127.0.0.1:8080;
}

server {
  modsecurity on;
  modsecurity_rules_file {{ nginx_path }}/modsec_includes.conf;

  listen 443 ssl http2;
  listen [::]:443 ssl http2;
  server_name {{ ci_server_name }};

  ssl_certificate         /etc/letsencrypt/live/{{ ci_server_name }}/fullchain.pem;
  ssl_certificate_key     /etc/letsencrypt/live/{{ ci_server_name }}/privkey.pem;
  ssl_trusted_certificate /etc/letsencrypt/live/{{ ci_server_name }}/fullchain.pem;
  ssl_dhparam             /etc/ssl/certs/dhparam.pem;

  ssl_ciphers               ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
  ssl_prefer_server_ciphers off;
  ssl_protocols             TLSv1.2 TLSv1.3;
  ssl_session_cache         shared:SSL:10m;
  ssl_session_tickets       off;
  ssl_session_timeout       1d;
  ssl_stapling              on;
  ssl_stapling_verify       on;

  location / {
    add_header Allow                     "GET, POST, HEAD"                                                                                                                                                                        always;
    add_header Content-Security-Policy   "default-src 'self'; img-src 'self' https://*.githubusercontent.com; frame-ancestors 'self'; base-uri 'none',base-uri 'self'; form-action 'self'" always;
    add_header Referrer-Policy           "same-origin"                                                                                                                                                                            always;
    add_header Strict-Transport-Security "max-age=630720000; includeSubDomains"                                                                                                                                                   always;
    add_header X-Content-Type-Options    "nosniff"                                                                                                                                                                                always;

    # Sent from upstream:
    # add_header X-Frame-Options           "SAMEORIGIN";
    # add_header X-XSS-Protection          "1; mode=block";

    proxy_set_header Host              $http_host;
    proxy_set_header X-Forwarded-For   $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;

    proxy_buffering    off;
    proxy_http_version 1.1;
    proxy_pass         http://drone;
    proxy_redirect     off;

    chunked_transfer_encoding off;
  }
}