Nginx explained

guide.yml

# Full guide: http://nginx.org/en/docs/beginners_guide.html
# Configuration is located in etc/nginx/sites-available/default
# NOTE: Updates will require `nginx -s reload` in order to be adopted

# Following configurations are within the "main" context
# Block directive with fixed values, more at: https://docs.nginx.com/nginx/admin-guide/basic-functionality/managing-configuration-files/
http {
# Context of the block directive within brackets {}
# Anything defined and is not a block is a directive and ends with semicolon ;

  server {
    # Map any request to specified port and apply following rules
    listen 8080;
  
    # Specified path directives, in this case for root
    # Higher specification have priority and not the definition order
    location / {
      # Redirect request to specific port
      proxy_pass http://localhost:8080;
    }
  
    # Custom path
    location /anything {
      # Map to path to load folder, default index.html
      root /data/www;
    }
    
    # Path by RegEx prefixed with ~
    location ~ \.(gif|jpg|png)$ {}
  }
}

events {
}