nginx.conf

user root;
worker_processes 16;

events {
    worker_connections 8192;
}

http {
    include /etc/nginx/mime.types;

    server {
        gzip on;
        gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        listen 80;
        server_name docs;
        index index.html;

        location / {
            # content location
            root /app/docs;

            # exact matches -> reverse clean urls -> folders -> not found
            try_files $uri $uri.html $uri/ =404;

            # non existent pages
            error_page 404 /404.html;

            # a folder without index.html raises 403 in this setup
            error_page 403 /404.html;

            # adjust caching headers
            # files in the assets folder have hashes filenames
            location ~* /assets/ {
                expires 1y;
                add_header Cache-Control "public, immutable";
            }
        }

    }
}