instruction: Create a comprehensive Dockerfile for networking applications with best practices
output: ```dockerfile
  from a remote Docker host or the container be
  able to ping a remote host, the remote host or the physical network in between
  need to have a route pointing to the host IP address of the container's Docker
  host eth interface.Dual stack IPv4 IPv6 IPvlan L2 modeNot only does Libnetwork give you complete control over IPv4 addressing, but
  it also gives you total control over IPv6 addressing as well as feature parity
  between the two address families.The next example will start with IPv6 only. Start two containers on the same
  VLAN 139 and ping one another. Since the IPv4 subnet is not specified, the
  default IPAM will provision a default IPv4 subnet. That subnet is isolated
  unless the upstream network is explicitly routing it on VLAN 139.
  
  # Create a v6 network
  $ docker network create -d ipvlan \
   --ipv6 --subnet=2001:db8:abc2::/64 --gateway=2001:db8:abc2::22 \
   -o parent=eth0.139 v6ipvlan139
  
  # Start a container on the network
  $ docker run --net=v6ipvlan139 -it --rm alpine /bin/sh
  View the container eth0 interface and v6 routing table:
  
  # Inside the IPv6 container
  $$ ip a show eth0
  75: eth0@if55: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
   link/ether 00:50:56:2b:29:40 brd ff:ff:ff:ff:ff:ff
   inet 172.18.0.2/16 scope global eth0
   valid_lft forever preferred_lft forever
   inet6 2001:db8:abc4::250:56ff:fe2b:2940/64 scope link
   valid_lft forever preferred_lft forever
   inet6 2001:db8:abc2::1/64 scope link nodad
   valid_lft forever preferred_lft forever
  
  $$ ip -6 route
  2001:db8:abc4::/64 dev eth0 proto kernel metric 256
  2001:db8:abc2::/64 dev eth0 proto kernel metric 256
  default via 2001:db8:abc2::22 dev eth0 metric 1024
  Start a second container and ping the first container's v6 address.
  
  # Test L2 connectivity over IPv6
  $ docker run --net=v6ipvlan139 -it --rm alpine /bin/sh
  
  # Inside the second IPv6 container
  $$ ip a show eth0
  75: eth0@if55: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
   link/ether 00:50:56:2b:29:40 brd ff:ff:ff:ff:ff:ff
   inet 172.18.0.3/16 scope global eth0
   valid_lft forever preferred_lft forever
   inet6 2001:db8:abc4::250:56ff:fe2b:2940/64 scope link tentative dadfailed
   valid_lft forever preferred_lft forever
   inet6 2001:db8:abc2::2/64 scope link nodad
   valid_lft forever preferred_lft forever
  
  $$ ping6 2001:db8:abc2::1
  PING 2001:db8:abc2::1 (2001:db8:abc2::1): 56 data bytes
  64 bytes
  ```