Recipe for prerender

Dockerfile

# Prerender server with S3 cache

FROM dockerfile/nodejs

RUN apt-get update -y
RUN apt-get install -y \
    python2.7 python-pip \
    libfreetype6 libfontconfig

RUN cd / && git clone https://github.com/prerender/prerender
RUN cd /prerender && npm install

EXPOSE 3000 

RUN sed -i '/server.start()/i server.use(prerender.s3HtmlCache());' /prerender/server.js

CMD node /prerender/server.js

web-nginx.conf

server {
  listen      80;
  server_name www.blah.net;
  root        /data/http/ng/www;

  location / {
    index     index.html;
    try_files $uri @prerender;
  }

  location ~* \.(eot|otf|ttf|woff|svg)$ {
    add_header Access-Control-Allow-Origin *;
  }

  #resolve using Google's DNS server
  resolver 8.8.8.8;

  # https://gist.github.com/thoop/8165802
  location @prerender {
    proxy_set_header  X-Prerender-Token Gp4Op2QOcr434moDgMkI;
    
    set $prerender 0;
    # No need to add googlebot, it uses the escaped_fragment, which is caught below
    if ($http_user_agent ~* "xml-sitemaps|baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest|slackbot") {
      set $prerender 1;
    }
    if ($args ~ "_escaped_fragment_") {
      set $prerender 1;
    }
    if ($http_user_agent ~ "Prerender") {
      set $prerender 0;
    }
    if ($uri ~ "\.(js|css|xml|less|png|jpg|jpeg|gif|pdf|doc|txt|ico|rss|zip|mp3|rar|exe|wmv|doc|avi|ppt|mpg|mpeg|tif|wav|mov|psd|ai|xls|mp4|m4a|swf|dat|dmg|iso|flv|m4v|torrent)") {
      set $prerender 0;
    }

    if ($prerender = 1) {
      # setting prerender as a variable forces DNS resolution since nginx caches IPs and doesnt play well with load balancing
      set $prerender "10.133.234.202:3000";
      rewrite .* /$scheme://$server_name$request_uri? break;
      proxy_pass http://$prerender;
    }
    if ($prerender = 0) {
      rewrite .* /index.html break;
    }
  }

}