instruction: Create a comprehensive Dockerfile for networking applications with best practices
output: ```dockerfile
  from the point of view of the container,
  and the concepts around container networking.
  This page doesn't describe OS-specific details about how Docker networks work.
  For information about how Docker manipulates iptables rules on Linux,
  see Packet filtering and firewalls.User-defined networksYou can create custom, user-defined networks, and connect multiple containers
  to the same network. Once connected to a user-defined network, containers can
  communicate with each other using container IP addresses or container names.The following example creates a network using the bridge network driver and
  running a container in the created network:
  
  $ docker network create -d bridge my-net
  $ docker run --network=my-net -itd --name=container3 busybox
  DriversThe following network drivers are available by default, and provide core
  networking functionality:DriverDescriptionbridgeThe default network driver.hostRemove network isolation between the container and the Docker host.noneCompletely isolate a container
  ```